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Dify版本

0.6.5

云或自托管

自托管(Docker)

重现步骤

当我根据官方文档编写自定义版块扩展时，在服务重启过程中出现了加载错误。错误信息如下：

Traceback (most recent call last):
  File "/usr/local/bin/flask", line 8, in <module>
    sys.exit(main())
  File "/usr/local/lib/python3.10/site-packages/flask/cli.py", line 1105, in main
    cli.main()
  File "/usr/local/lib/python3.10/site-packages/click/core.py", line 1078, in main
    rv = self.invoke(ctx)
  File "/usr/local/lib/python3.10/site-packages/click/core.py", line 1682, in invoke
    cmd_name, cmd, args = self.resolve_command(ctx, args)
  File "/usr/local/lib/python3.10/site-packages/click/core.py", line 1729, in resolve_command
    cmd = self.get_command(ctx, cmd_name)
  File "/usr/local/lib/python3.10/site-packages/flask/cli.py", line 611, in get_command
    app = info.load_app()
  File "/usr/local/lib/python3.10/site-packages/flask/cli.py", line 335, in load_app
    app = locate_app(import_name, name)
  File "/usr/local/lib/python3.10/site-packages/flask/cli.py", line 245, in locate_app
    __import__(module_name)
  File "/app/api/app.py", line 210, in <module>
    app = create_app()
  File "/app/api/app.py", line 105, in create_app
    initialize_extensions(app)
  File "/app/api/app.py", line 116, in initialize_extensions
    ext_code_based_extension.init()
  File "/app/api/extensions/ext_code_based_extension.py", line 5, in init
    code_based_extension.init()
  File "/app/api/core/extension/extension.py", line 16, in init
    self.__module_extensions[module.value] = module_class.scan_extensions()
  File "/app/api/core/extension/extensible.py", line 111, in scan_extensions
    sorted_extensions = sort_to_dict_by_position_map(position_map, extensions, lambda x: x.name)
  File "/app/api/core/utils/position_helper.py", line 69, in sort_to_dict_by_position_map
    sorted_items = sort_by_position_map(position_map, data, name_func)
  File "/app/api/core/utils/position_helper.py", line 53, in sort_by_position_map
    return sorted(data, key=lambda x: position_map.get(name_func(x), float('inf')))
TypeError: '<' not supported between instances of 'NoneType' and 'int'

当我检查源代码时，发现一个非内置扩展会在 None 中设置一个 position_map ,从而导致这个TypeError,请帮忙修复这个问题。
我尝试修改 api/core/extension/extensible.py 文件的第68行，如下所示：

if '__builtin__' in file_names:
                    builtin = True

                    builtin_file_path = os.path.join(subdir_path, '__builtin__')
                    if os.path.exists(builtin_file_path):
                        with open(builtin_file_path, encoding='utf-8') as f:
                            position = int(f.read().strip())
                    position_map[extension_name] = position                  # modified work
                #position_map[extension_name] = position                   # original  NOT work

✔️预期行为

加载扩展成功

❌实际行为

抛出TypeError异常。