Fix traceback when a request is rejected

python3/vimspector/debug_adapter_connection.py

@@ -267,7 +267,7 @@ class DebugAdapterConnection( object ):
         if request.failure_handler:
           request.failure_handler( reason, message )
         elif 'OnFailure' in dir( self._handler ):
-          self._handler.OnFailure( reason, message )
+          self._handler.OnFailure( reason, request.msg, message )
         else:
           utils.UserMessage( 'Request failed: {0}'.format( reason ) )
     elif message[ 'type' ] == 'event':

python3/vimspector/debug_session.py

@@ -776,9 +776,10 @@ class DebugSession( object ):
     } )
 
 
-  def OnFailure( self, reason, message ):
-    msg = "Request for '{}' failed: {}".format( message[ 'command' ],
-                                                reason )
+  def OnFailure( self, reason, request, message ):
+    msg = "Request for '{}' failed: {}\nResponse: {}".format( request,
+                                                              reason,
+                                                              message )
     self._outputView.Print( 'server', msg )
 
   def _Launch( self ):