Error message

• Warning: include_once(): Unable to allocate memory for pool. in file_register_phar_wrapper() (line 27 of /var/www/drupal/7.93/isa/includes/file.phar.inc).
• Warning: include_once(): Unable to allocate memory for pool. in file_register_phar_wrapper() (line 28 of /var/www/drupal/7.93/isa/includes/file.phar.inc).
• Warning: require_once(): Unable to allocate memory for pool. in _drupal_bootstrap_variables() (line 2823 of /var/www/drupal/7.93/isa/includes/bootstrap.inc).
• Warning: require_once(): Unable to allocate memory for pool. in Database::openConnection() (line 1795 of /var/www/drupal/7.93/isa/includes/database/database.inc).