Changing the appdata/wger/ permission to 777 (yes... yes... I know) at least get's me a bit further, the page is accesible, but nothing loads. In the logs can see everything spammed with:
01/09/2024
04:37:59 PM
[09/Jan/2024 16:37:59] "GET /static/images/icons/flags/pt-br.svg HTTP/1.1" 404 2883
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WARNING 2024-01-09 16:37:59,304 log Not Found: /static/images/icons/flags/tr.svg
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WARNING 2024-01-09 16:37:59,306 log Not Found: /static/images/icons/flags/sv.svg
01/09/2024
04:37:59 PM
[09/Jan/2024 16:37:59] "GET /static/images/icons/flags/tr.svg HTTP/1.1" 404 2883
01/09/2024
04:37:59 PM
[09/Jan/2024 16:37:59] "GET /static/images/icons/flags/sv.svg HTTP/1.1" 404 2883
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WARNING 2024-01-09 16:37:59,309 log Not Found: /static/images/icons/flags/uk.svg
01/09/2024
04:37:59 PM
[09/Jan/2024 16:37:59] "GET /static/images/icons/flags/uk.svg HTTP/1.1" 404 2883
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04:37:59 PM
WARNING 2024-01-09 16:37:59,313 log Not Found: /static/images/icons/flags/zh-hans.svg
01/09/2024
04:37:59 PM
[09/Jan/2024 16:37:59] "GET /static/images/icons/flags/zh-hans.svg HTTP/1.1" 404 2883
01/09/2024
04:37:59 PM
WARNING 2024-01-09 16:37:59,317 log Not Found: /static/images/logos/play-store/google-play-badge.svg
01/09/2024
04:37:59 PM
[09/Jan/2024 16:37:59] "GET /static/images/logos/play-store/google-play-badge.svg HTTP/1.1" 404 2883
01/09/2024
04:37:59 PM
WARNING 2024-01-09 16:37:59,321 log Not Found: /static/images/favicon.png
01/09/2024
04:37:59 PM
[09/Jan/2024 16:37:59] "GET /static/images/favicon.png HTTP/1.1" 404 2883