refactor: optimized error handling (#2020)

* Update output.yaml

* Update default-pipeline-config.json

* Update chat.py

* Add files via upload

* Update chat.py

* Update default-pipeline-config.json

* Update output.yaml

* Update constants.py

* feat: update logic

* fix: update required database version to 21

---------

Co-authored-by: Junyan Qin <rockchinq@gmail.com>

src/langbot/pkg/pipeline/process/handlers/chat.py

@@ -149,12 +149,19 @@ class ChatMessageHandler(handler.MessageHandler):
                 self.ap.logger.error(f'Conversation({query.query_id}) Request Failed: {error_info}')
                 traceback.print_exc()
 
-                hide_exception_info = query.pipeline_config['output']['misc']['hide-exception']
+                exception_handling = query.pipeline_config['output']['misc'].get('exception-handling', 'show-hint')
+
+                if exception_handling == 'show-error':
+                    user_notice = f'{e}'
+                elif exception_handling == 'show-hint':
+                    user_notice = query.pipeline_config['output']['misc'].get('failure-hint', 'Request failed.')
+                else:  # hide
+                    user_notice = None
 
                 yield entities.StageProcessResult(
                     result_type=entities.ResultType.INTERRUPT,
                     new_query=query,
-                    user_notice='请求失败' if hide_exception_info else f'{e}',
+                    user_notice=user_notice,
                     error_notice=f'{e}',
                     debug_notice=traceback.format_exc(),
                 )