Issue Prestashop 9 and too many open files

[JuanCar]

Server operating system version

Almalinux 9.4

Plesk version and microupdate number

Plesk Obsidian 18.0.69 #4

Hi, I'm trying to install Prestashop 9 in my server. But all I get is a error 500, the reason: too many open files.
Does anybody know which value must be set with ulimit? Documentation doesn't say anything about this issue.
Thanks

 

[Sebahat.hadzhi]

Hey, @JuanCar . Have you seen this article:

• MySQL/MariaDB on the server with Plesk shows the error: Too many open files

 

[JuanCar]

Thanks. I think The error is not about MySQL
[Tue Jul 22 01:34:02.863031 2025] [proxy_fcgi:error] [pid 3542396:tid 3542416] [client 31.222.109.130:0] AH01071: Got error 'PHP message: PHP Warning: include(/var/www/vhosts/domain.com/shopping.domain.com/vendor/monolog/monolog/src/Monolog/DateTimeImmutable.php): Failed to open stream: Too many open files in /var/www/vhosts/domain.com/shopping.domain.com/vendor/composer/ClassLoader.php on line 576; PHP message: PHP Warning: include(): Failed opening '/var/www/vhosts/domain.com/shopping.domain.com/vendor/composer/../monolog/monolog/src/Monolog/DateTimeImmutable.php' for inclusion (include_path='.:/opt/plesk/php/8.3/share/pear') in /var/www/vhosts/domain.com/shopping.domain.com/vendor/composer/ClassLoader.php on line 576; PHP message: PHP Fatal error: Uncaught Error: Class "Monolog\\DateTimeImmutable" not found in /var/www/vhosts/domain.com/shopping.domain.com/vendor/monolog/monolog/src/Monolog/Logger.php:383\nStack trace:\n#0 /var/www/vhosts/domain.com/shopping.domain.com/vendor/monolog/monolog/src/Monolog/Logger.php(638): Monolog\\Logger->addRecord()\n#1 /var/www/vhosts/domain.com/shopping.domain.com/vendor/symfony/cache/CacheItem.php(154): Monolog\\Logger->warning()\n#2 /var/www/vhosts/domain.com/shopping.domain.com/vendor/symfony/cache/Adapter/AbstractAdapter.php(159): Symfony\\Component\\Cache\\CacheItem::log()\n#3 /var/www/vhosts/domain.com/shopping.domain.com/vendor/symfony/cache/Traits/AbstractAdapterTrait.php(237): Symfony\\Component\\Cache\\Adapter\\AbstractAdapter->commit()\n#4 /var/www/vhosts/domain.com/shopping.domain.com/vendor/symfony/cache/Adapter/PhpArrayAdapter.php(211): Symfony\\Component\\Cache\\Adapter\\AbstractAdapter->save()\n#5 /var/www...; PHP message: PHP Warning: include(/var/www/vhosts/domain.com/shopping.domain.com/vendor/defuse/php-encryption/src/Crypto.php): Failed to open stream: Too many open files in /var/www/vhosts/domain.com/shopping.domain.com/vendor/composer/ClassLoader.php on line 576; PHP message: PHP Warning: include(): Failed opening '/var/www/vhosts/domain.com/shopping.domain.com/vendor/composer/../defuse/php-encryption/src/Crypto.php' for inclusion (include_path='.:/opt/plesk/php/8.3/share/pear') in /var/www/vhosts/domain.com/shopping.domain.com/vendor/composer/ClassLoader.php on line 576; PHP message: PHP Fatal error: Uncaught Error: Class "Defuse\\Crypto\\Crypto" not found in /var/www/vhosts/domain.com/shopping.domain.com/classes/PhpEncryptionEngine.php:57\nStack trace:\n#0 /var/www/vhosts/domain.com/shopping.domain.com/classes/PhpEncryption.php(58): PhpEncryptionEngineCore->encrypt()\n#1 /var/www/vhosts/domain.com/shopping.domain.com/classes/Cookie.php(361): PhpEncryptionCore->encrypt()\n#2 /var/www/vhosts/domain.com/shopping.domain.com/classes/Cookie.php(432): CookieCore->encryptAndSetCookie()\n#3 /var/www/vhosts/domain.com/shopping.domain.com/classes/Cookie.php(399): CookieCore->write()\n#4 [internal function]: CookieCore->__destruct()\n#5 {main}\n thrown in /var/www/vhosts/domain.com/shopping.domain.com/classes/PhpEncryptionEngine.php on line 57'

 

[Kaspar]

Maybe this helps: How to Increase Number of Open Files Limit in Linux

 

[JuanCar]

Yes, I know using ulimit, but how much?
And a new data. I've just see a Modsecurity log about injection
Pattern match "(?i)php://(std(in|out|err)|(in|out)put|fd|memory|temp|filter)"
So I can't rely in this platform (Prestashop)
Thanks