Error 500 while upgrading from 4.2.7 to 4.3.1

[Dominion]

Hello,
Please help:
Trying normal upgrade. Current version 4.2.7, I use proper upgrade package but it signals Error500 without any further info. There's also nothing in Espo log.
I've searched the forum and tried salvation on "error500", but no luck.

[dafnie]

Hi

Try look in your servers php-log

[Dominion]

Hello,
Thanks for a hint! I've found error.log file and, after the upgrade try it shows the string:

[Tue Jan 03 10:26:26 2017] [error] [client 46.37.222.49] PHP Fatal error: Allowed memory size of 268435456 bytes exhausted (tried to allocate 16147133 bytes) in /var/www/vendor/monolog/monolog/src/Monolog/Formatter/LineFormatter.php on line 167, referer: http://crm.dominion.od.ua/

[tanya]

Hi.
Increase php memory limit

[dafnie]

I would try increasing the memory in php.ini.

https://tutorials.hostucan.com/how-to-increase-php-memory-limit

[Dominion]

Tried to increase memory size in php.ini and upgrade - received the same Error500, but with addition:

Your PHP version does not support this installation package.

In error.log

[Tue Jan 03 10:52:01 2017] [notice] caught SIGTERM, shutting down
[Tue Jan 03 10:52:02 2017] [notice] Apache/2.2.22 (Debian) PHP/5.4.45-0+deb7u6 configured -- resuming normal operations

Does it mean I'll have to upgrade PHP to version 7 before upgrading ESPO?

[tanya]

Which version of php do you have? It needs version 5.5+ for now

[Dominion]

I have PHP 5.4.45-0
I understand, will try to upgrade to version 5.5+ before

[Dominion]

Thank you very much for your help! Upgraded to php5.6 and everything passed fine!