Hi,

I have same issue.... and could not modify any widgets.

How solve it?

I have the same issue with dashboards after upgrading from 6.4.16 to 7.0.0

I have the same issue with dashboards after upgrading from Zabbix 6.4.2 to 7.0.0

LOG tail -f /var/log/apache2/error.log

After add widget in log apper this error below, but I raise limit memory in php the same error 

[Fri Jun 28 14:19:02.807390 2024] [php:error] [pid 3090622] [client xxx.xxx.xxx.xxx:62537] PHP Fatal error:  Allowed memory size of 134217728 bytes exhausted (tried to allocate 20480 bytes) in /usr/share/zabbix/include/classes/api/CRelationMap.php on line 72, referer: http://xxx.xxx.xxx.xxx/zabbix/zabbix.php?action=dashboard.view&dashboardid=172

rmenegaldo , the line in the log is known - the PHP is limited to 128 MB.

To fix the problem we can open /etc/zabbix/apache.conf (or /etc/php-fpm.d/zabbix.conf) and change:

php_value[memory_limit] = 128M

to:

php_value[memory_limit] = 2G

If cannot find the right file, this should give a good lead:

grep -r memory_limit /etc/* | grep zabbix

kaloyanhr could explore apache, nginx, php-fpm logs and see what the web server tells about "Unexpected server error"?

I've modified the file of PHP: /etc/php/8.1/apache2/php.ini  (increase php memory to 2 GB) but this error is same.

Ubuntu 22.04.3 LTS

Zabbix 7.0 (from Zabbix sources )

PHP 8.1 

Apache2 (latest version)

aigars.kadikis thank you for support
After chenge limit memory and restart apache now work fine

Thank you very much for taking the time to share feedback!

almaz101, it's not good practice to increase PHP memory globally.
Officially, we operate with overrides. Introduce a memory override just for Zabbix frontend layer (zabbix.conf, apache.conf)

To see the live value (recognized by the Zabbix GUI layer), we can visit the "setup.php" page and click the "Next" button once.

aigars.kadikis and almaz101 

See in the pre-requisites of zabbix is 128M, but no work fine when raise limit memory to 2G work! 

I did not found apache.conf or zabbix.conf.... command grep memory_limit doesn't find too.

Dears, another test I change Limit memory to 256M and work fine too

Also command grep memory_limit /etc/* doesnt show any result

almaz101, then increase the global PHP limit to 2048M. This is sufficient for most scenarios. Not less than this.

global PHP memory limit Increased to 2048 - same error.

almaz101 try restart service apache, PHP, zabbix or reboot your server and test again!

This didn't helped me. I still have the "Unexpected server error", when I edit a dashboard.

Hello, aigars.kadikis ,

I was seeing the same error as Rodrigo mentioned in the nginx error log. After changing the PHP memory limit to 2G and restarting the php service it is now working correctly.

Thank you for your support.

I still have 'Unexpectedserver error".......  Modification of the Global settings of the PHP doesnt solve it.

I have the same problem. We can't add new widget or edit exist. I changed memory limit to 2G but it doesn't help me. Can we increase prioryty to higher ?

Only when I increased the parameter memory limit to 3G it started working, but the time to enter the gadget edition takes 90 sec

Increasing the PHP memory limit helps to solve the "Unexpected server error" message.