we have several problems on our websites.
1- On the website https://ccl1.clickandcollect.leclerc, we have an internal server error - request id: 01fxqh1nka83vt66hdnzw1dshd netlify
and the loading of css and js files is random with 500 errors in console.
for your redirects issue, you might read through this guide and see if anything in there fixes your problem:
as far as your second problem, regarding 500 errors - we generally send 500 errors back to the requester if something with your code cannot be executed properly.
what have you tried so far to debug this? what kind of code are you running at that URL? is it a function?