Error message

Warning: preg_match(): Allocation of JIT memory failed, PCRE JIT will be disabled. This is likely caused by security restrictions. Either grant PHP permission to allocate executable memory, or set pcre.jit=0 in drupal_valid_http_host() (line 736 of /var/www/vhosts/iclam.org/assoc.iclam.org/includes/bootstrap.inc).