PHP Memory Error

I’ve recently installed PHP5.6 on my HestiaCP Node and I’m getting an error.
[proxy_fcgi:error] [pid 11162:tid 140392297109056] [client] AH01071: Got error 'PHP message: PHP Fatal error: Allowed memory size of 33554432 bytes exhausted (tried to allocate 527834 bytes) in /xxx/account/install.php
I have increase the memory limit but the issue still same on HestiaCP!!
I have another Node with MyVestaCP and its working fine.

Increase memory limit

the issue still same!
I have increase the memory limit 512M

nano /etc/php/5.6/fpm/php.ini?

yes the issue still same