report4.php "Reports -> Notifications" not working HTTP ERROR 500 (Zabbix 7.4.5)

[SZ_CGT]

Hi All
I have found just now, but I don't know since when is not working, the page /zabbix/report4.php of my server Zabbix v7.4.5 is not working (I'm accessing as Admin Zabbix, so it's not a problem of permissions)
I needed to modify a set of notifications or report but I recieve "white page" HTTP Error 500

Any Idea?

Thanks
Simone

[AlexeyBrizgalov]

Hello,
This is probably a web server issue. Are you using nginx or apache2? Any errors visible in web server error log?
One possibility might be that you are hitting memory limit, in which case you need to increase it in php.ini file.

[SZ_CGT]

Hi Alexey
meanwhile thanks for the replay

1) is apache
2) in the file php.ini I have found this "memory_limit = 128M" ... and other config as shared memory ... or you mean some other config?

Thanks
Simone

[AlexeyBrizgalov]

Check apache error_log and access_log first to make sure if it is indeed a memory limit issue or something different, they should be located either in /var/log/httpd/ or /var/log/apache2/
See the time when you accessed this page for errors, if it is a memory limit issue then you should have something like "Allowed memory size of X bytes exhausted (tried to allocate Y bytes)." If you see this error, then increase memory_limit in php.ini and in /etc/php-fpm.d/zabbix.conf