Fatal error: Uncaught exception Exception with message Query error: Can't read dir of './pommstore/' (errno: 24 - Too many open files) (SHOW TABLES FROM `pommstore`) thrown in system/modules/core/library/Contao/Database/Statement.php on line 295

#0 system/modules/core/library/Contao/Database.php(207): Contao\Database\Statement->query('SHOW TABLES FRO...')
#1 system/modules/core/library/Contao/Database.php(252): Contao\Database->query('SHOW TABLES FRO...')
#2 system/modules/core/library/Contao/Database.php(281): Contao\Database->listTables('pommstore', false)
#3 system/modules/pct_customelements/PCT/CustomElements/Core/SystemIntegration.php(66): Contao\Database->tableExists('tl_pct_customel...')
#4 system/initialize.php(243): PCT\CustomElements\Core\SystemIntegration->initSystem()
#5 index.php(16): require('/var/www/vhosts...')
#6 {main}