Unable to attach files in webmail

When I try to attach a file, I get the error "Server error (error)"



Please help

Edit - I can upload very small files of size 200KB

Tried changinging max upload size in php.in of php-fpm 7.1 not seems to be working.

[Mon Jun 28 17:22:28.504301 2021] [proxy_http:error] [pid 12297:tid 140198276957952] [client IP:46520] AH01097: pass request body failed to 127.0.0.1:2095 (localhost) from Server IP (), referer: https://domain name.com/webmail/?_task=mail&_action=compose&_id=183216398060d9d7f06dfe7

hi remove nginx and reinstall it from webserver manager

hi remove nginx and reinstall it from webserver manager

Thank you.

You mean in "Setup default Web Servers" select Apache and build and again use a combination with NGINX ?