diff --git a/ci/onnxruntime_test.yml b/ci/onnxruntime_test.yml
index b378937..e93e93a 100644
--- a/ci/onnxruntime_test.yml
+++ b/ci/onnxruntime_test.yml
@@ -27,7 +27,7 @@ pool:
 steps:
   - checkout: self
     submodules: true
-  - script: git clone --recursive --branch fix_android_build https://github.com/daquexian/onnxruntime $(Agent.HomeDirectory)/onnxruntime
+  - script: git clone --recursive --branch android https://github.com/daquexian/onnxruntime $(Agent.HomeDirectory)/onnxruntime
     displayName: Clone ONNX Runtime
   - script: rm -rf $(Agent.HomeDirectory)/onnxruntime/cmake/external/DNNLibrary && cp -r $(Build.SourcesDirectory) $(Agent.HomeDirectory)/onnxruntime/cmake/external/DNNLibrary
     displayName: Copy latest DNNLibrary
diff --git a/include/tools/onnx2daq/OnnxConverter.h b/include/tools/onnx2daq/OnnxConverter.h
index 0fba27c..8010061 100644
--- a/include/tools/onnx2daq/OnnxConverter.h
+++ b/include/tools/onnx2daq/OnnxConverter.h
@@ -215,7 +215,7 @@ class OnnxConverter {
     void Clear();
 
    public:
-    std::vector<std::vector<int>> GetSupportedNodes(
+    expected<std::vector<std::vector<int>>, std::string> GetSupportedNodes(
         ONNX_NAMESPACE::ModelProto model_proto);
     void Convert(const std::string &model_str, const std::string &filepath,
                  const std::string &table_file = "");
diff --git a/tools/getsupportednodes/getsupportednodes.cpp b/tools/getsupportednodes/getsupportednodes.cpp
index 92dc9a5..c2c819c 100644
--- a/tools/getsupportednodes/getsupportednodes.cpp
+++ b/tools/getsupportednodes/getsupportednodes.cpp
@@ -12,6 +12,14 @@ int main(int argc, char *argv[])
     // FIXME: Handle the return value
     model_proto.ParseFromString(ss.str());
     dnn::OnnxConverter converter;
-    PNT(converter.GetSupportedNodes(model_proto));
-    return 0;
+    const auto nodes = converter.GetSupportedNodes(model_proto);
+    if (nodes) {
+        const auto &supported_ops = nodes.value();
+        PNT(supported_ops);
+        return 0;
+    } else {
+        const auto &error = nodes.error();
+        PNT(error);
+        return 1;
+    }
 }
diff --git a/tools/onnx2daq/OnnxConverter.cpp b/tools/onnx2daq/OnnxConverter.cpp
index 3be1337..b975d67 100644
--- a/tools/onnx2daq/OnnxConverter.cpp
+++ b/tools/onnx2daq/OnnxConverter.cpp
@@ -1,3 +1,4 @@
+#include <common/data_types.h>
 #include <common/Shaper.h>
 #include <common/StrKeyMap.h>
 #include <common/helper.h>
@@ -271,8 +272,9 @@ void OnnxConverter::HandleInitializer() {
                    ONNX_NAMESPACE::TensorProto_DataType_INT64) {
             // TODO: shape of reshape layer
         } else {
-            PNT(tensor.name(), tensor.data_type());
-            DNN_ASSERT(false, "");
+            DNN_ASSERT(false, "The data type \"" + std::to_string(tensor.data_type()) +
+                                  "\" of tensor \"" +
+                                  tensor.name() + "\" is not supported");
         }
         operands_.push_back(name);
     }
@@ -630,34 +632,38 @@ bool IsValidSupportedNodesVec(const std::vector<int> &supported_node_vec,
     return false;
 }
 
-std::vector<std::vector<int>> OnnxConverter::GetSupportedNodes(
+expected<std::vector<std::vector<int>>, std::string> OnnxConverter::GetSupportedNodes(
     ONNX_NAMESPACE::ModelProto model_proto) {
     GOOGLE_PROTOBUF_VERIFY_VERSION;
     ONNX_NAMESPACE::shape_inference::InferShapes(model_proto);
     model_proto_ = model_proto;
-    HandleInitializer();
+    try {
+        HandleInitializer();
 
-    std::vector<std::vector<int>> supported_node_vecs;
-    std::vector<int> supported_node_vec;
-    for (int i = 0; i < model_proto.graph().node_size(); i++) {
-        bool supported;
-        std::string error_msg;
-        std::tie(supported, error_msg) =
-            IsNodeSupported(model_proto, model_proto.graph().node(i));
-        if (supported) {
-            supported_node_vec.push_back(i);
-        } else {
-            if (IsValidSupportedNodesVec(supported_node_vec, model_proto)) {
-                supported_node_vecs.push_back(supported_node_vec);
-                supported_node_vec.clear();
+        std::vector<std::vector<int>> supported_node_vecs;
+        std::vector<int> supported_node_vec;
+        for (int i = 0; i < model_proto.graph().node_size(); i++) {
+            bool supported;
+            std::string error_msg;
+            std::tie(supported, error_msg) =
+                IsNodeSupported(model_proto, model_proto.graph().node(i));
+            if (supported) {
+                supported_node_vec.push_back(i);
+            } else {
+                if (IsValidSupportedNodesVec(supported_node_vec, model_proto)) {
+                    supported_node_vecs.push_back(supported_node_vec);
+                    supported_node_vec.clear();
+                }
             }
         }
+        if (IsValidSupportedNodesVec(supported_node_vec, model_proto)) {
+            supported_node_vecs.push_back(supported_node_vec);
+        }
+        Clear();
+        return supported_node_vecs;
+    } catch (std::exception &e) {
+        return make_unexpected(e.what());
     }
-    if (IsValidSupportedNodesVec(supported_node_vec, model_proto)) {
-        supported_node_vecs.push_back(supported_node_vec);
-    }
-    Clear();
-    return supported_node_vecs;
 }
 
 void OnnxConverter::Convert(const ONNX_NAMESPACE::ModelProto &model_proto,