refactor: removed bare except

Author: RobeMartins

BlocksScreen/lib/panels/mainWindow.py

@@ -544,9 +544,9 @@ def _handle_error_message(self, method, data, metadata) -> None:
             return
         text = data
         if isinstance(data, dict):
-            try:
+            if "message" in data:
                 text = f"{data['message']}"
-            except:
+            else:
                 text = data
         self.popup.new_message(
             message_type=Popup.MessageType.ERROR,