# Backend error on custom endpoind

**URL:** <https://forum.radsystems.io/t/backend-error-on-custom-endpoind/1625>\
**Category:** PyRad Vue\
**Created:** [June 25, 2023, 2:02am UTC](https://forum.radsystems.io/t/backend-error-on-custom-endpoind/1625 "2023-06-25T02:02:05Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![Steve](https://forum.radsystems.io/letter_avatar_proxy/v4/letter/s/f19dbf/32.png) [@Steve](https://forum.radsystems.io/u/Steve)\
**Post date:** [June 25, 2023, 2:02am UTC](https://forum.radsystems.io/t/backend-error-on-custom-endpoind/1625/1 "2023-06-25T02:02:05Z")

</div>

File “C:\Users\coding\Documents\RadSystems\PHPRad Projects\revised\python-flask-api\venv\Lib\site-packages\flask\_cors\extension.py”, line 161, in wrapped\_function  
return cors\_after\_request(app.make\_response(f(\*args, \*\*kwargs)))  
File “C:\Users\coding\Documents\RadSystems\PHPRad Projects\revised\python-flask-api\venv\Lib\site-packages\flask\app.py”, line 1523, in full\_dispatch\_request  
rv = self.dispatch\_request()  
File “C:\Users\coding\Documents\RadSystems\PHPRad Projects\revised\python-flask-api\venv\Lib\site-packages\flask\app.py”, line 1509, in dispatch\_request  
return self.ensure\_sync(self.view\_functions[rule.endpoint])(\*\*req.view\_args)  
TypeError: wrapper() missing 1 required positional argument: ‘fn’