Error message

• Warning: require_once(): Unable to allocate memory for pool. in drupal_bootstrap() (line 2537 of /var/www/html/includes/bootstrap.inc).
• Warning: require_once(): Unable to allocate memory for pool. in _drupal_bootstrap_full() (line 5259 of /var/www/html/includes/common.inc).
• Warning: include_once(): Unable to allocate memory for pool. in drupal_load() (line 1374 of /var/www/html/includes/bootstrap.inc).
• Warning: include_once(): Unable to allocate memory for pool. in drupal_load() (line 1374 of /var/www/html/includes/bootstrap.inc).
• Warning: include_once(): Unable to allocate memory for pool. in drupal_load() (line 1374 of /var/www/html/includes/bootstrap.inc).
• Warning: include_once(): Unable to allocate memory for pool. in drupal_load() (line 1374 of /var/www/html/includes/bootstrap.inc).
• Warning: require_once(): Unable to allocate memory for pool. in module_load_include() (line 341 of /var/www/html/includes/module.inc).
• Warning: require_once(): Unable to allocate memory for pool. in module_load_include() (line 341 of /var/www/html/includes/module.inc).
• Warning: require_once(): Unable to allocate memory for pool. in require_once() (line 9 of /var/www/html/modules/file/file.module).