Prevent refresh fields error from breaking index patterns management …

…page (#11885)

* No longer throw an error to the rest of the stack if there is an error refreshing fields for an index pattern

* Only prevent rethrowing for the certain error scenario

src/ui/public/index_patterns/_index_pattern.js

@@ -1,5 +1,5 @@
 import _ from 'lodash';
-import { SavedObjectNotFound, DuplicateField } from 'ui/errors';
+import { SavedObjectNotFound, DuplicateField, IndexPatternMissingIndices } from 'ui/errors';
 import angular from 'angular';
 import { getComputedFields } from 'ui/index_patterns/_get_computed_fields';
 import { formatHit } from 'ui/index_patterns/_format_hit';
@@ -366,6 +366,15 @@ export function IndexPatternProvider(Private, Notifier, config, kbnIndex, Promis
       .then(() => this.save())
       .catch((err) => {
         notify.error(err);
+        // https://github.com/elastic/kibana/issues/9224
+        // This call will attempt to remap fields from the matching
+        // ES index which may not actually exist. In that scenario,
+        // we still want to notify the user that there is a problem
+        // but we do not want to potentially make any pages unusable
+        // so do not rethrow the error here
+        if (err instanceof IndexPatternMissingIndices) {
+          return;
+        }
         return Promise.reject(err);
       });
     }