How to fix Possible CSRF attack

lately i get this
but i dont see where to fix this
also i dont see a php.ini file

anyone have a fix for this

Possible CSRF Attack: Remedies Against Error — Simtech Development.


Please contact your server administrator and ask to increase the max_input_vars value to at least to 10000.

have this but still the problem

You can try to increase this value further, or contact us via the Help Desk on this case.