Describe the bug
When changing seasons at the challenge page on the brave browser you get the message "Sorry, that page is missing", which is in the brave browser a standard functionality to still be able to view sites and pages that are removed but saved in the wayback machine.
In this case it does not interfere with the flow of the site, but still might be something to fix at some point.

To Reproduce
Steps to reproduce the behavior:

1. Open the site on the brave browser.
2. Go to the challenges page.
3. Change season.
4. You will get the message at the top of the screen.

Expected behavior
It should not appear when changing seasons

Screenshots / Logs

Versions (please complete the following information, if relevant):
Latest build at this point on the https://pathwar.mikatech.me/ site.

Additional context
Everything still works fine when this popup appears, so its just something visual that might cause some confusion but nothing very importand, everything is still working correctely as far as I could see.