New control app not loading in development (no Security)

I have some problems with the retrieve password app of Sc.
when a user acces it the page won’t load (page not loading error 500 or a blank screen)

so i tested a new control app with a link to the login. same result.
when i use a blank app it load instantly when i use a redirect tot a control app with no security the page gives the error 500 or blank page.

tried everything but it seems that control apps with no security won’t load (no code just a field, so that;s not the problem)

any suggestions?

so i have another project on the same server. copied the retrieve password from their tot my project. in development all works fine. in production the page stays blank or error 500. i know it works in the other project, but in this project…

i turned all the rights to 777 still blank page or error 500 with the retrieve password app. also build the whole app again. debug, nothing still the same problem.

any suggestions?

it’sfrustrating knowing the app works fine but not in production (php8.1)