diff --git a/src/main/java/wooteco/subway/admin/controller/GlobalExceptionHandler.java b/src/main/java/wooteco/subway/admin/controller/GlobalExceptionHandler.java
index 3c56c216a..3b6f0d975 100644
--- a/src/main/java/wooteco/subway/admin/controller/GlobalExceptionHandler.java
+++ b/src/main/java/wooteco/subway/admin/controller/GlobalExceptionHandler.java
@@ -1,8 +1,12 @@
 package wooteco.subway.admin.controller;
 
+import java.util.stream.Collectors;
+
+import org.springframework.context.support.DefaultMessageSourceResolvable;
 import org.springframework.dao.DataAccessException;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.ResponseEntity;
+import org.springframework.validation.BindingResult;
 import org.springframework.web.bind.MethodArgumentNotValidException;
 import org.springframework.web.bind.annotation.ExceptionHandler;
 import org.springframework.web.bind.annotation.RestControllerAdvice;
@@ -13,8 +17,18 @@
 @RestControllerAdvice
 public class GlobalExceptionHandler {
 
-    @ExceptionHandler(value = {MethodArgumentNotValidException.class, BusinessException.class})
-    public ResponseEntity<ErrorResponse> bindingErrorHandler(RuntimeException e) {
+    @ExceptionHandler(value = MethodArgumentNotValidException.class)
+    public ResponseEntity<ErrorResponse> validExceptionHandler(MethodArgumentNotValidException e) {
+        BindingResult bindingResult = e.getBindingResult();
+        String errorMessage = bindingResult.getAllErrors()
+            .stream()
+            .map(DefaultMessageSourceResolvable::getDefaultMessage)
+            .collect(Collectors.joining("\n"));
+        return ResponseEntity.badRequest().body(new ErrorResponse(errorMessage));
+    }
+
+    @ExceptionHandler(value = BusinessException.class)
+    public ResponseEntity<ErrorResponse> bindingErrorHandler(BusinessException e) {
         return ResponseEntity.status(HttpStatus.BAD_REQUEST)
             .body(new ErrorResponse(e.getMessage()));
     }
@@ -24,4 +38,10 @@ public ResponseEntity<ErrorResponse> bindingErrorHandler(DataAccessException e)
         return ResponseEntity.status(HttpStatus.NOT_FOUND)
             .body(new ErrorResponse(e.getMessage()));
     }
+
+    @ExceptionHandler(value = Exception.class)
+    public ResponseEntity<ErrorResponse> defaultExceptionHandler(Exception e) {
+        return ResponseEntity.status(HttpStatus.BAD_REQUEST)
+            .body(new ErrorResponse(e.getMessage()));
+    }
 }
diff --git a/src/main/java/wooteco/subway/admin/domain/CreateTime.java b/src/main/java/wooteco/subway/admin/domain/CreateTime.java
index a4d0d8d00..e5818b906 100644
--- a/src/main/java/wooteco/subway/admin/domain/CreateTime.java
+++ b/src/main/java/wooteco/subway/admin/domain/CreateTime.java
@@ -3,7 +3,6 @@
 import java.time.LocalDateTime;
 
 import org.springframework.data.annotation.CreatedDate;
-import org.springframework.data.annotation.LastModifiedDate;
 
 public abstract class CreateTime {
 
diff --git a/src/main/java/wooteco/subway/admin/service/GraphService.java b/src/main/java/wooteco/subway/admin/domain/Graph.java
similarity index 78%
rename from src/main/java/wooteco/subway/admin/service/GraphService.java
rename to src/main/java/wooteco/subway/admin/domain/Graph.java
index ac9a99307..742fd8b81 100644
--- a/src/main/java/wooteco/subway/admin/service/GraphService.java
+++ b/src/main/java/wooteco/subway/admin/domain/Graph.java
@@ -1,46 +1,35 @@
-package wooteco.subway.admin.service;
+package wooteco.subway.admin.domain;
 
 import java.util.List;
 import java.util.Objects;
 
 import org.jgrapht.alg.shortestpath.DijkstraShortestPath;
 import org.jgrapht.graph.WeightedMultigraph;
-import org.springframework.stereotype.Service;
 
-import wooteco.subway.admin.domain.Line;
 import wooteco.subway.admin.dto.GraphResponse;
 import wooteco.subway.admin.dto.PathType;
 import wooteco.subway.admin.exception.IllegalStationNameException;
 import wooteco.subway.admin.exception.NotFoundLineException;
 import wooteco.subway.admin.exception.NotFoundPathException;
 
-@Service
-public class GraphService {
-    public GraphResponse findPath(List<Line> lines, Long sourceId, Long targetId,
-        PathType pathType) {
-        validate(lines, sourceId, targetId);
-        WeightedMultigraph<Long, LineStationEdge> graph = mapLinesToGraph(lines, pathType);
-        DijkstraShortestPath<Long, LineStationEdge> dijkstraShortestPath = new DijkstraShortestPath<>(
-            graph);
+public class Graph {
 
-        if (Objects.isNull(dijkstraShortestPath.getPath(sourceId, targetId))) {
-            throw new NotFoundPathException(sourceId, targetId);
-        }
+    private final WeightedMultigraph<Long, LineStationEdge> graph;
 
-        return mapToGraphResponse(sourceId, targetId, dijkstraShortestPath);
+    private Graph(
+        WeightedMultigraph<Long, LineStationEdge> graph) {
+        this.graph = graph;
     }
 
-    private void validate(List<Line> lines, Long sourceId, Long targetId) {
-        if (Objects.isNull(lines)) {
-            throw new NotFoundLineException();
-        }
-        if (Objects.equals(sourceId, targetId)) {
-            throw new IllegalStationNameException(sourceId, targetId);
-        }
+    public static Graph of(List<Line> lines, PathType pathType) {
+        return new Graph(mapLinesToGraph(lines, pathType));
     }
 
-    private WeightedMultigraph<Long, LineStationEdge> mapLinesToGraph(List<Line> lines,
+    private static WeightedMultigraph<Long, LineStationEdge> mapLinesToGraph(List<Line> lines,
         PathType pathType) {
+        if (Objects.isNull(lines)) {
+            throw new NotFoundLineException();
+        }
         WeightedMultigraph<Long, LineStationEdge> graph
             = new WeightedMultigraph(LineStationEdge.class);
         lines.stream()
@@ -55,6 +44,24 @@ private WeightedMultigraph<Long, LineStationEdge> mapLinesToGraph(List<Line> lin
         return graph;
     }
 
+    public GraphResponse findPath(Long sourceId, Long targetId) {
+        validate(sourceId, targetId);
+        DijkstraShortestPath<Long, LineStationEdge> dijkstraShortestPath = new DijkstraShortestPath<>(
+            graph);
+
+        if (Objects.isNull(dijkstraShortestPath.getPath(sourceId, targetId))) {
+            throw new NotFoundPathException(sourceId, targetId);
+        }
+
+        return mapToGraphResponse(sourceId, targetId, dijkstraShortestPath);
+    }
+
+    private void validate(Long sourceId, Long targetId) {
+        if (Objects.equals(sourceId, targetId)) {
+            throw new IllegalStationNameException(sourceId, targetId);
+        }
+    }
+
     private GraphResponse mapToGraphResponse(Long source, Long target,
         DijkstraShortestPath<Long, LineStationEdge> dijkstraShortestPath) {
         List<Long> path = dijkstraShortestPath.getPath(source, target).getVertexList();
diff --git a/src/main/java/wooteco/subway/admin/domain/Line.java b/src/main/java/wooteco/subway/admin/domain/Line.java
index 309c5f637..20faa1584 100644
--- a/src/main/java/wooteco/subway/admin/domain/Line.java
+++ b/src/main/java/wooteco/subway/admin/domain/Line.java
@@ -12,6 +12,7 @@
 import org.springframework.data.annotation.Id;
 
 public class Line extends UpdateTime {
+
     @Id
     private Long id;
     private String name;
diff --git a/src/main/java/wooteco/subway/admin/domain/LineStation.java b/src/main/java/wooteco/subway/admin/domain/LineStation.java
index 21165368c..7f51f6254 100644
--- a/src/main/java/wooteco/subway/admin/domain/LineStation.java
+++ b/src/main/java/wooteco/subway/admin/domain/LineStation.java
@@ -2,9 +2,9 @@
 
 public class LineStation {
     private Long preStationId;
-    private Long stationId;
-    private int distance;
-    private int duration;
+    private final Long stationId;
+    private final int distance;
+    private final int duration;
 
     public LineStation(Long preStationId, Long stationId, int distance, int duration) {
         this.preStationId = preStationId;
diff --git a/src/main/java/wooteco/subway/admin/service/LineStationEdge.java b/src/main/java/wooteco/subway/admin/domain/LineStationEdge.java
similarity index 78%
rename from src/main/java/wooteco/subway/admin/service/LineStationEdge.java
rename to src/main/java/wooteco/subway/admin/domain/LineStationEdge.java
index bf0b76d71..ed576e657 100644
--- a/src/main/java/wooteco/subway/admin/service/LineStationEdge.java
+++ b/src/main/java/wooteco/subway/admin/domain/LineStationEdge.java
@@ -1,14 +1,13 @@
-package wooteco.subway.admin.service;
+package wooteco.subway.admin.domain;
 
 import org.jgrapht.graph.DefaultWeightedEdge;
 
-import wooteco.subway.admin.domain.LineStation;
 import wooteco.subway.admin.dto.PathType;
 
 public class LineStationEdge extends DefaultWeightedEdge {
 
-    private LineStation lineStation;
-    private PathType pathType;
+    private final LineStation lineStation;
+    private final PathType pathType;
 
     public LineStationEdge(LineStation lineStation, PathType pathType) {
         this.lineStation = lineStation;
diff --git a/src/main/java/wooteco/subway/admin/domain/Station.java b/src/main/java/wooteco/subway/admin/domain/Station.java
index c9269a313..5b6c602cc 100644
--- a/src/main/java/wooteco/subway/admin/domain/Station.java
+++ b/src/main/java/wooteco/subway/admin/domain/Station.java
@@ -3,6 +3,7 @@
 import org.springframework.data.annotation.Id;
 
 public class Station extends CreateTime {
+
     @Id
     private Long id;
     private String name;
diff --git a/src/main/java/wooteco/subway/admin/domain/UpdateTime.java b/src/main/java/wooteco/subway/admin/domain/UpdateTime.java
index acb72d448..152bf2899 100644
--- a/src/main/java/wooteco/subway/admin/domain/UpdateTime.java
+++ b/src/main/java/wooteco/subway/admin/domain/UpdateTime.java
@@ -4,13 +4,12 @@
 
 import org.springframework.data.annotation.LastModifiedDate;
 
-public abstract class UpdateTime extends CreateTime{
+public abstract class UpdateTime extends CreateTime {
 
     @LastModifiedDate
     private LocalDateTime updatedAt;
 
-
-    public UpdateTime(){
+    public UpdateTime() {
     }
 
     public UpdateTime(LocalDateTime updatedAt) {
diff --git a/src/main/java/wooteco/subway/admin/dto/ErrorResponse.java b/src/main/java/wooteco/subway/admin/dto/ErrorResponse.java
index 1f506d5c7..754c3c249 100644
--- a/src/main/java/wooteco/subway/admin/dto/ErrorResponse.java
+++ b/src/main/java/wooteco/subway/admin/dto/ErrorResponse.java
@@ -1,6 +1,5 @@
 package wooteco.subway.admin.dto;
 
-
 public class ErrorResponse {
 
     private String errorMessage;
diff --git a/src/main/java/wooteco/subway/admin/dto/LineDetailResponse.java b/src/main/java/wooteco/subway/admin/dto/LineDetailResponse.java
index cd73a695c..08068efff 100644
--- a/src/main/java/wooteco/subway/admin/dto/LineDetailResponse.java
+++ b/src/main/java/wooteco/subway/admin/dto/LineDetailResponse.java
@@ -1,13 +1,11 @@
 package wooteco.subway.admin.dto;
 
-import wooteco.subway.admin.domain.Line;
-import wooteco.subway.admin.domain.Station;
-
 import java.time.LocalDateTime;
 import java.time.LocalTime;
-import java.util.ArrayList;
 import java.util.List;
-import java.util.stream.Collectors;
+
+import wooteco.subway.admin.domain.Line;
+import wooteco.subway.admin.domain.Station;
 
 public class LineDetailResponse {
     private Long id;
@@ -38,10 +36,11 @@ public LineDetailResponse(Long id, String name, String backgroundColor,
     }
 
     public static LineDetailResponse of(Line line, List<Station> stations) {
-        return new LineDetailResponse(line.getId(), line.getName(), line.getBackgroundColor(), line.getStartTime(), line.getEndTime(), line.getIntervalTime(), line.getCreatedAt(), line.getUpdatedAt(), stations);
+        return new LineDetailResponse(line.getId(), line.getName(), line.getBackgroundColor(),
+            line.getStartTime(), line.getEndTime(), line.getIntervalTime(), line.getCreatedAt(),
+            line.getUpdatedAt(), stations);
     }
 
-
     public Long getId() {
         return id;
     }
diff --git a/src/main/java/wooteco/subway/admin/dto/LineRequest.java b/src/main/java/wooteco/subway/admin/dto/LineRequest.java
index b35a9f68b..8ab7edbf5 100644
--- a/src/main/java/wooteco/subway/admin/dto/LineRequest.java
+++ b/src/main/java/wooteco/subway/admin/dto/LineRequest.java
@@ -1,14 +1,13 @@
 package wooteco.subway.admin.dto;
 
-import wooteco.subway.admin.domain.Line;
-
 import java.time.LocalTime;
-import java.util.ArrayList;
 
 import javax.validation.constraints.Min;
 import javax.validation.constraints.NotBlank;
 import javax.validation.constraints.NotNull;
 
+import wooteco.subway.admin.domain.Line;
+
 public class LineRequest {
 
     @NotBlank(message = "노선 이름은 필수 입력 요소입니다.")
diff --git a/src/main/java/wooteco/subway/admin/dto/PathRequest.java b/src/main/java/wooteco/subway/admin/dto/PathRequest.java
index 044ec5a77..3fffd13bc 100644
--- a/src/main/java/wooteco/subway/admin/dto/PathRequest.java
+++ b/src/main/java/wooteco/subway/admin/dto/PathRequest.java
@@ -3,6 +3,7 @@
 import javax.validation.constraints.NotBlank;
 
 public class PathRequest {
+
     @NotBlank(message = "이전 역 이름은 필수 입력 요소입니다.")
     private String sourceName;
     @NotBlank(message = "대상 역 이름은 필수 입력 요소입니다.")
diff --git a/src/main/java/wooteco/subway/admin/dto/StationCreateRequest.java b/src/main/java/wooteco/subway/admin/dto/StationCreateRequest.java
index 33b782987..a3958f9cc 100644
--- a/src/main/java/wooteco/subway/admin/dto/StationCreateRequest.java
+++ b/src/main/java/wooteco/subway/admin/dto/StationCreateRequest.java
@@ -1,6 +1,5 @@
 package wooteco.subway.admin.dto;
 
-
 import javax.validation.constraints.NotBlank;
 
 import wooteco.subway.admin.domain.Station;
diff --git a/src/main/java/wooteco/subway/admin/dto/StationResponse.java b/src/main/java/wooteco/subway/admin/dto/StationResponse.java
index b8e1ffc88..48d4804fd 100644
--- a/src/main/java/wooteco/subway/admin/dto/StationResponse.java
+++ b/src/main/java/wooteco/subway/admin/dto/StationResponse.java
@@ -1,11 +1,11 @@
 package wooteco.subway.admin.dto;
 
-import wooteco.subway.admin.domain.Station;
-
 import java.time.LocalDateTime;
 import java.util.List;
 import java.util.stream.Collectors;
 
+import wooteco.subway.admin.domain.Station;
+
 public class StationResponse {
     private Long id;
     private String name;
@@ -17,8 +17,8 @@ public static StationResponse of(Station station) {
 
     public static List<StationResponse> listOf(List<Station> stations) {
         return stations.stream()
-                .map(StationResponse::of)
-                .collect(Collectors.toList());
+            .map(StationResponse::of)
+            .collect(Collectors.toList());
     }
 
     public StationResponse() {
diff --git a/src/main/java/wooteco/subway/admin/dto/WholeSubwayResponse.java b/src/main/java/wooteco/subway/admin/dto/WholeSubwayResponse.java
index 1190fadeb..95424aa43 100644
--- a/src/main/java/wooteco/subway/admin/dto/WholeSubwayResponse.java
+++ b/src/main/java/wooteco/subway/admin/dto/WholeSubwayResponse.java
@@ -1,7 +1,6 @@
 package wooteco.subway.admin.dto;
 
 import java.util.List;
-import java.util.Map;
 
 public class WholeSubwayResponse {
     private List<LineDetailResponse> lineDetailResponse;
diff --git a/src/main/java/wooteco/subway/admin/exception/IllegalTypeNameException.java b/src/main/java/wooteco/subway/admin/exception/IllegalTypeNameException.java
index ebb2af735..cd97663f2 100644
--- a/src/main/java/wooteco/subway/admin/exception/IllegalTypeNameException.java
+++ b/src/main/java/wooteco/subway/admin/exception/IllegalTypeNameException.java
@@ -3,6 +3,6 @@
 public class IllegalTypeNameException extends BusinessException {
 
     public IllegalTypeNameException(String typeName) {
-        super(typeName +"방식의 경로는 지원하지 않습니다.");
+        super(typeName + "방식의 경로는 지원하지 않습니다.");
     }
 }
diff --git a/src/main/java/wooteco/subway/admin/repository/LineRepository.java b/src/main/java/wooteco/subway/admin/repository/LineRepository.java
index 83ddc5790..a1e7ceca0 100644
--- a/src/main/java/wooteco/subway/admin/repository/LineRepository.java
+++ b/src/main/java/wooteco/subway/admin/repository/LineRepository.java
@@ -1,9 +1,10 @@
 package wooteco.subway.admin.repository;
 
+import java.util.List;
+
 import org.springframework.data.repository.CrudRepository;
-import wooteco.subway.admin.domain.Line;
 
-import java.util.List;
+import wooteco.subway.admin.domain.Line;
 
 public interface LineRepository extends CrudRepository<Line, Long> {
     @Override
diff --git a/src/main/java/wooteco/subway/admin/repository/StationRepository.java b/src/main/java/wooteco/subway/admin/repository/StationRepository.java
index 5cb66563f..d72ff4349 100644
--- a/src/main/java/wooteco/subway/admin/repository/StationRepository.java
+++ b/src/main/java/wooteco/subway/admin/repository/StationRepository.java
@@ -1,12 +1,13 @@
 package wooteco.subway.admin.repository;
 
+import java.util.List;
+import java.util.Optional;
+
 import org.springframework.data.jdbc.repository.query.Query;
 import org.springframework.data.repository.CrudRepository;
 import org.springframework.data.repository.query.Param;
-import wooteco.subway.admin.domain.Station;
 
-import java.util.List;
-import java.util.Optional;
+import wooteco.subway.admin.domain.Station;
 
 public interface StationRepository extends CrudRepository<Station, Long> {
     @Override
diff --git a/src/main/java/wooteco/subway/admin/service/PathService.java b/src/main/java/wooteco/subway/admin/service/PathService.java
index d7efc51e0..115569a87 100644
--- a/src/main/java/wooteco/subway/admin/service/PathService.java
+++ b/src/main/java/wooteco/subway/admin/service/PathService.java
@@ -6,6 +6,7 @@
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 
+import wooteco.subway.admin.domain.Graph;
 import wooteco.subway.admin.domain.Line;
 import wooteco.subway.admin.dto.GraphResponse;
 import wooteco.subway.admin.dto.PathRequest;
@@ -20,13 +21,10 @@ public class PathService {
 
     private final StationService stationService;
     private final LineService lineService;
-    private final GraphService graphService;
 
-    public PathService(StationService stationService,
-        LineService lineService, GraphService graphService) {
+    public PathService(StationService stationService, LineService lineService) {
         this.stationService = stationService;
         this.lineService = lineService;
-        this.graphService = graphService;
     }
 
     public PathResponse findPath(PathRequest request) {
@@ -34,8 +32,9 @@ public PathResponse findPath(PathRequest request) {
         Long targetId = stationService.findIdByName(request.getTargetName());
         List<Line> lines = lineService.findAll();
 
-        GraphResponse graphResponse = graphService.findPath(lines, sourceId, targetId,
-            PathType.of(request.getType()));
+        Graph graph = Graph.of(lines, PathType.of(request.getType()));
+        GraphResponse graphResponse = graph.findPath(sourceId, targetId);
+
         List<Long> path = graphResponse.getPath();
 
         List<StationResponse> stationResponses = StationResponse.listOf(
diff --git a/src/main/resources/static/admin/js/views/AdminEdge.js b/src/main/resources/static/admin/js/views/AdminEdge.js
index a9f9b2107..7db1da408 100644
--- a/src/main/resources/static/admin/js/views/AdminEdge.js
+++ b/src/main/resources/static/admin/js/views/AdminEdge.js
@@ -58,7 +58,7 @@ function AdminEdge() {
         "afterbegin",
         subwayLineOptionTemplate
       );
-    }).catch(response => response.json().then(error => alert(error.message)));
+    }).catch(response => response.json().then(error => alert(error.errorMessage)));
   };
 
   const onCreateStationHandler = event => {
@@ -87,7 +87,7 @@ function AdminEdge() {
       },
       body: JSON.stringify(data)
     }).then(response => {
-      if (response.status >= 400) {
+      if (!response.ok) {
         throw response;
       }
       return response.json();
@@ -113,7 +113,7 @@ function AdminEdge() {
           edgePadding: 25
         });
       }
-    }).catch(response => response.json().then(error => alert(error.message)));
+    }).catch(response => response.json().then(error => alert(error.errorMessage)));
   }
 
   function validate(data) {
@@ -238,7 +238,7 @@ function AdminEdge() {
         items: 1,
         edgePadding: 25
       });
-    }).catch(response => response.json().then(error => alert(error.message)));
+    }).catch(response => response.json().then(error => alert(error.errorMessage)));
   };
 }
 
diff --git a/src/main/resources/static/admin/js/views/AdminLine.js b/src/main/resources/static/admin/js/views/AdminLine.js
index 806813352..80bd65433 100644
--- a/src/main/resources/static/admin/js/views/AdminLine.js
+++ b/src/main/resources/static/admin/js/views/AdminLine.js
@@ -29,8 +29,12 @@ function AdminLine() {
         'Content-Type': 'application/json'
       },
       body: JSON.stringify(data)
-    }).then(response => response.json())
-    .then(jsonResponse => {
+    }).then(response => {
+      if (!response.ok) {
+        throw response
+      }
+      return response.json();
+    }).then(jsonResponse => {
       let lines = document.querySelectorAll(".line-id");
       for (let line of lines) {
         if (line.innerText.trim() === updateId) {
@@ -38,7 +42,7 @@ function AdminLine() {
         }
       }
       updateId = null;
-    });
+    }).catch(error => error.json()).then(json => alert(json.errorMessage));
   }
 
   function createLine(data) {
@@ -49,13 +53,12 @@ function AdminLine() {
       },
       body: JSON.stringify(data)
     }).then(response => {
-      if (response.status >= 400) {
-        alert("에러가 발생했습니다.");
+      if (!response.ok) {
+        throw response;
       }
       return response.json();
     })
     .then(jsonResponse => {
-
       const newSubwayLine = {
         id: jsonResponse.id,
         name: jsonResponse.name,
@@ -65,7 +68,7 @@ function AdminLine() {
         "beforeend",
         subwayLinesTemplate(newSubwayLine)
       );
-    });
+    }).catch(error => error.json()).then(error => alert(error.errorMessage));
   }
 
   const onCreateSubwayLine = event => {
@@ -157,14 +160,19 @@ function AdminLine() {
         headers: {
           'Content-Type': 'application/json; charset=utf-8'
         }
-      }).then(response => response.json())
+      }).then(response => {
+        if (!response.ok) {
+          throw response;
+        }
+        return response.json();
+      })
       .then(jsonResponse => {
         document.querySelector("#first-time-display").innerText = jsonResponse.startTime.toString()
         .substr(0, 5);
         document.querySelector("#last-time-display").innerText = jsonResponse.endTime.toString()
         .substr(0, 5);
         document.querySelector("#interval-time-display").innerText = jsonResponse.intervalTime + "분";
-      });
+      }).catch(error => error.json()).then(error => alert(error.errorMessage));
     }
   }
 
@@ -189,14 +197,18 @@ function AdminLine() {
       headers: {
         'Content-type': 'application/json'
       }
-    }).then(response => response.json())
+    }).then(response => {
+      if (!response.ok) {
+        throw response;
+      }
+      return response.json();
+    })
     .then(jsonResponse => {
       for (const line of jsonResponse) {
         $subwayLineList.insertAdjacentHTML("beforeend", subwayLinesTemplate(line));
       }
-    }).catch(error => {
-      alert(error);
-    });
+    }).catch(error => error.json()).then(error => alert(error.errorMessage));
+    ;
 
   };
 
diff --git a/src/main/resources/static/admin/js/views/AdminStation.js b/src/main/resources/static/admin/js/views/AdminStation.js
index c0ed514a8..f8da4d451 100644
--- a/src/main/resources/static/admin/js/views/AdminStation.js
+++ b/src/main/resources/static/admin/js/views/AdminStation.js
@@ -29,24 +29,15 @@ function AdminStation() {
       },
       body: JSON.stringify(data)
     }).then(response => {
-      if (response.status >= 400) {
-        alert("에러가 발생했습니다.");
-        statusCode = 500;
+      if (!response.ok) {
+        throw response;
       }
       return response.json();
     })
     .then(response => {
-      if (statusCode !== 500) {
-        $stationNameInput.value = "";
-        $stationList.insertAdjacentHTML("beforeend", listItemTemplate(response));
-      } else {
-        $errorMessage.innerText = response.message;
-      }
-    }).catch(error => {
-      alert(error);
-    });
-
-
+      $stationNameInput.value = "";
+      $stationList.insertAdjacentHTML("beforeend", listItemTemplate(response));
+    }).catch(error => error.json()).then(error => alert(error.errorMessage));
   };
 
   function validate(stationName) {
diff --git a/src/main/resources/static/service/js/views/Map.js b/src/main/resources/static/service/js/views/Map.js
index 63c9870ca..0da4eeda6 100644
--- a/src/main/resources/static/service/js/views/Map.js
+++ b/src/main/resources/static/service/js/views/Map.js
@@ -22,7 +22,7 @@ function Map() {
         items: 3,
         edgePadding: 25
       });
-    });
+    }).catch(error => error.json()).then(error => alert(error.errorMessage));
   };
 
   this.init = () => {
diff --git a/src/main/resources/static/service/js/views/Search.js b/src/main/resources/static/service/js/views/Search.js
index ce34e05bd..4a425e205 100644
--- a/src/main/resources/static/service/js/views/Search.js
+++ b/src/main/resources/static/service/js/views/Search.js
@@ -50,7 +50,7 @@ function Search() {
       $target.classList.toggle("border-l", true);
       $target.classList.toggle("border-t", true);
       $target.classList.toggle("border-r", true);
-      $byDistanceButton.classList.toggle("bg-gray-200",true);
+      $byDistanceButton.classList.toggle("bg-gray-200", true);
       $byDistanceButton.classList.toggle("border-l", false);
       $byDistanceButton.classList.toggle("border-t", false);
       $byDistanceButton.classList.toggle("border-r", false);
@@ -86,10 +86,10 @@ function Search() {
       response.json().then(jsonResponse => {
         showSearchResult(jsonResponse);
       });
-    }).catch(error => error.json().then(json => {
-      alert(json.message);
-    }))
-  }
+    }).catch(error => error.json()).then(jsonError => {
+      alert(jsonError.errorMessage);
+    });
+  };
 
   const onToggleFavorite = event => {
     event.preventDefault()
diff --git a/src/test/java/wooteco/subway/admin/service/PathServiceTest.java b/src/test/java/wooteco/subway/admin/service/PathServiceTest.java
index f287f52ab..b992cde71 100644
--- a/src/test/java/wooteco/subway/admin/service/PathServiceTest.java
+++ b/src/test/java/wooteco/subway/admin/service/PathServiceTest.java
@@ -43,8 +43,6 @@ class PathServiceTest {
     @Mock
     private LineService lineService;
 
-    private GraphService graphService;
-
     private PathService pathService;
 
     private Line line1;
@@ -66,8 +64,7 @@ class PathServiceTest {
 
     @BeforeEach
     void setUp() {
-        graphService = new GraphService();
-        pathService = new PathService(stationService, lineService, graphService);
+        pathService = new PathService(stationService, lineService);
 
         station1 = new Station(1L, STATION_NAME1);
         station2 = new Station(2L, STATION_NAME2);