Error al modificar productos y salvar algunas configuraciones

[latalata]

Hola estoy usando prestashop 1.5.4.1, y almodificar prouctos y guardar algunas configuraciones me da este erro, lo he puesto es modo de verlo, haber si me pueden indicar alguna solución.

 

Fatal error: Uncaught exception 'UnexpectedValueException' with message 'RecursiveDirectoryIterator::__construct(/var/www/vhosts/vivasanoyfeliz.com/vivasanoyfeliz.com/httpdocs/cache/smarty/cache/blocktopmenu/0/product/1/1/1/0/0/0/0): failed to open dir: Too many open files' in /var/www/vhosts/vivasanoyfeliz.com/vivasanoyfeliz.com/httpdocs/tools/smarty/sysplugins/smarty_internal_cacheresource_file.php:180 Stack trace: #0 [internal function]: RecursiveDirectoryIterator->__construct('/var/www/vhosts...', 0) #1 /var/www/vhosts/vivasanoyfeliz.com/vivasanoyfeliz.com/httpdocs/tools/smarty/sysplugins/smarty_internal_cacheresource_file.php(180): RecursiveDirectoryIterator->getChildren() #2 /var/www/vhosts/vivasanoyfeliz.com/vivasanoyfeliz.com/httpdocs/tools/smarty/Smarty.class.php(772): Smarty_Internal_CacheResource_File->clear(Object(Smarty), '/var/www/vhosts...', NULL, NULL, NULL) #3 /var/www/vhosts/vivasanoyfeliz.com/vivasanoyfeliz.com/httpdocs/classes/Tools.php(2131): Smarty->clearCache('/var/www/vhosts...', NULL, NULL) #4 /va in /var/www/vhosts/vivasanoyfeliz.com/vivasanoyfeliz.com/httpdocs/tools/smarty/sysplugins/smarty_internal_cacheresource_file.php on line 180

 

Gracias,