正则修改名字的时候报错

[miomua]

[2024-01-06 20:45:35,355] ERROR in init: Traceback (most recent call last):
File "/usr/local/lib/python3.12/site-packages/flask/app.py", line 867, in full_dispatch_request
rv = self.dispatch_request()
^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/local/lib/python3.12/site-packages/flask/app.py", line 852, in dispatch_request
return self.ensure_sync(self.view_functions[rule.endpoint])(**view_args)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/app/src/controller/main_ctrl.py", line 46, in previewRename
ret = rename.renamebyreg(content['source_folder'], content['reg'], content['prefix'], True)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/app/src/bizlogic/rename.py", line 54, in renamebyreg
current_app.logger.debug(originep + " "+epresult)
~~~~~~~~~~~~~~~~^~~~~~~~~
TypeError: can only concatenate str (not "NoneType") to str