Closed issue by danil-braun on void-packages repository

https://github.com/void-linux/void-packages/issues/31556

Description:
<!-- Don't request update of package. We have a script for that. https://alpha.de.repo.voidlinux.org/void-updates/void-updates.txt . However, a quality pull request may help. -->
### System

* xuname:  
  `Void 5.11.22_1 x86_64 GenuineIntel uptodate rrFF`
* package:  
  onionshare-2.2_5

fails to start:

```
$ onionshare-gui 
OnionShare 2.2 | https://onionshare.org/
QStandardPaths: XDG_RUNTIME_DIR not set, defaulting to '/tmp/runtime-d'
Traceback (most recent call last):
  File "/bin/onionshare-gui", line 22, in <module>
    onionshare_gui.main()
  File "/usr/lib/python3.9/site-packages/onionshare_gui/__init__.py", line 142, in main
    gui = OnionShareGui(common, onion, qtapp, app, filenames, config, local_only)
  File "/usr/lib/python3.9/site-packages/onionshare_gui/onionshare_gui.py", line 172, in __init__
    self.share_mode.init()
  File "/usr/lib/python3.9/site-packages/onionshare_gui/mode/share_mode/__init__.py", line 48, in init
    self.web = Web(self.common, True, "share")
  File "/usr/lib/python3.9/site-packages/onionshare/web/web.py", line 77, in __init__
    self.generate_static_url_path()
  File "/usr/lib/python3.9/site-packages/onionshare/web/web.py", line 166, in generate_static_url_path
    self.app.add_url_rule(
  File "/usr/lib/python3.9/site-packages/flask/scaffold.py", line 56, in wrapper_func
    return f(self, *args, **kwargs)
  File "/usr/lib/python3.9/site-packages/flask/app.py", line 1092, in add_url_rule
    raise AssertionError(
AssertionError: View function mapping is overwriting an existing endpoint function: static
```