[Blazor][Fixes #15155] Clarifies the message to turn on detailed errors in blazor apps

Author: javiercn

src/Components/Server/src/Circuits/CircuitHost.cs

@@ -545,7 +545,7 @@ private string GetClientErrorMessage(Exception exception, string additionalInfor
             else
             {
                 return $"There was an unhandled exception on the current circuit, so this circuit will be terminated. For more details turn on " +
-                    $"detailed exceptions in '{typeof(CircuitOptions).Name}.{nameof(CircuitOptions.DetailedErrors)}'. {additionalInformation}";
+                    $"detailed exceptions by setting 'detailedErrors: true' in 'appSettings.Development.json' or set '{typeof(CircuitOptions).Name}.{nameof(CircuitOptions.DetailedErrors)}'. {additionalInformation}";
             }
         }
 

src/Components/test/E2ETest/ServerExecutionTests/ComponentHubInvalidEventTest.cs

@@ -38,7 +38,7 @@ public async Task DispatchingAnInvalidEventArgument_DoesNotProduceWarnings()
         {
             // Arrange
             var expectedError = $"There was an unhandled exception on the current circuit, so this circuit will be terminated. For more details turn on " +
-                $"detailed exceptions in 'CircuitOptions.DetailedErrors'. Bad input data.";
+                $"detailed exceptions by setting 'detailedErrors: true' in 'appSettings.Development.json' or set 'CircuitOptions.DetailedErrors'. Bad input data.";
 
             var eventDescriptor = Serialize(new WebEventDescriptor()
             {
@@ -65,7 +65,7 @@ public async Task DispatchingAnInvalidEvent_DoesNotTriggerWarnings()
         {
             // Arrange
             var expectedError = $"There was an unhandled exception on the current circuit, so this circuit will be terminated. For more details turn on " +
-                $"detailed exceptions in 'CircuitOptions.DetailedErrors'. Failed to dispatch event.";
+                $"detailed exceptions by setting 'detailedErrors: true' in 'appSettings.Development.json' or set 'CircuitOptions.DetailedErrors'. Failed to dispatch event.";
 
             var eventDescriptor = Serialize(new WebEventDescriptor()
             {
@@ -105,7 +105,7 @@ public async Task DispatchingAnInvalidRenderAcknowledgement_DoesNotTriggerWarnin
         {
             // Arrange
             var expectedError = $"There was an unhandled exception on the current circuit, so this circuit will be terminated. For more details turn on " +
-                $"detailed exceptions in 'CircuitOptions.DetailedErrors'. Failed to complete render batch '1846'.";
+                $"detailed exceptions by setting 'detailedErrors: true' in 'appSettings.Development.json' or set 'CircuitOptions.DetailedErrors'. Failed to complete render batch '1846'.";
 
 
             Client.ConfirmRenderBatch = false;

src/Components/test/E2ETest/ServerExecutionTests/ComponentHubReliabilityTest.cs

@@ -216,7 +216,7 @@ public async Task OnLocationChanged_ReportsDebugForExceptionInValidation()
         {
             // Arrange
             var expectedError = "There was an unhandled exception on the current circuit, so this circuit will be terminated. " +
-                "For more details turn on detailed exceptions in 'CircuitOptions.DetailedErrors'. " +
+                "For more details turn on detailed exceptions by setting 'detailedErrors: true' in 'appSettings.Development.json' or set 'CircuitOptions.DetailedErrors'. " +
                 "Location change to 'http://example.com' failed.";
 
             var rootUri = ServerFixture.RootUri;
@@ -245,7 +245,7 @@ public async Task OnLocationChanged_ReportsErrorForExceptionInUserCode()
         {
             // Arrange
             var expectedError = "There was an unhandled exception on the current circuit, so this circuit will be terminated. " +
-                "For more details turn on detailed exceptions in 'CircuitOptions.DetailedErrors'. " +
+                "For more details turn on detailed exceptions by setting 'detailedErrors: true' in 'appSettings.Development.json' or set 'CircuitOptions.DetailedErrors'. " +
                 "Location change failed.";
 
             var rootUri = ServerFixture.RootUri;