Add exception guard

trains/backend_interface/base.py

@@ -134,7 +134,11 @@ class IdObjectBase(InterfaceBase):
     def reload(self):
         if not self.id:
             raise ValueError('Failed reloading %s: missing id' % type(self).__name__)
+        # noinspection PyBroadException
+        try:
             self._data = self._reload()
+        except Exception:
+            pass
 
     @classmethod
     def normalize_id(cls, id):

trains/backend_interface/task/development/stop_signal.py

@@ -28,6 +28,8 @@ class TaskStopSignal(object):
         self._task_reset_state_counter = 0
 
     def test(self):
+        # noinspection PyBroadException
+        try:
             status = self.task.status
             message = self.task.data.status_message
 
@@ -54,3 +56,5 @@ class TaskStopSignal(object):
                 )
             else:
                 self._task_reset_state_counter = 0
+        except Exception:
+            return None