# PHP Error: preg\_match(): Compilation failed: quantifier does not follow a repeatable item at offset 0 **URL:** \ **Category:** ℹ️ Support\ **Tags:** php\ **Created:** [January 5, 2023, 9:36pm UTC](https://help.nextcloud.com/t/php-error-preg-match-compilation-failed-quantifier-does-not-follow-a-repeatable-item-at-offset-0/153082 "2023-01-05T21:36:30Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![netlab](https://help.nextcloud.com/letter_avatar/netlab/32/5_5575768a8748004e209b776fc1b2916d.png) [@netlab](https://help.nextcloud.com/u/netlab)\ **Post date:** [January 5, 2023, 9:36pm UTC](https://help.nextcloud.com/t/php-error-preg-match-compilation-failed-quantifier-does-not-follow-a-repeatable-item-at-offset-0/153082/1 "2023-01-05T21:36:30Z")
> **Support intro** > > Sorry to hear you’re facing problems 🙁 > > _**[help.nextcloud.com](http://help.nextcloud.com) is for home/non-enterprise users. If you’re running a business, paid support can be accessed via [portal.nextcloud.com](http://portal.nextcloud.com) where we can ensure your business keeps running smoothly.**_ > > In order to help you as quickly as possible, before clicking **Create Topic** please provide as much of the below as you can. Feel free to use a pastebin service for logs, otherwise either indent short log examples with four spaces: > > ``` > example > > ``` > > Or for longer, use three backticks above and below the code snippet: > > ```auto > longer > example > here > > ``` > > Some or all of the below information will be requested if it isn’t supplied; for fastest response please provide as much as you can ❤ Nextcloud version _(eg, 20.0.5)_: `25.0.2` Operating system and version _(eg, Ubuntu 20.04)_: `Ubuntu 20.04` Apache or nginx version _(eg, Apache 2.4.25)_: `Apache 2.4.41` PHP version _(eg, 7.4)_: `8.0.26` The issue you are facing: I tried to search this issue in the forum but couldn’t found any, hoping this community can help me. I do not see any error in overview section however Admin longs continuously generating these logs as mentioned in title. I have updated PHP version last week so not sure it this started after upgrade. Please help me to clear these logs:- Is this the first time you’ve seen this error? _(Y/N)_: Steps to replicate it: I see this continuously not sure how to reproduce. 1. 2. 3. The output of your Nextcloud log in **Admin \> Logging** : ```auto [PHP] Error: Error: preg_match(): Compilation failed: quantifier does not follow a repeatable item at offset 0 at /var/www/nextcloud/apps/ransomware_protection/lib/Analyzer.php#257 at <> 0. <> OC\Log\ErrorHandler::onError() 1. /var/www/nextcloud/apps/ransomware_protection/lib/Analyzer.php line 257 preg_match() 2. /var/www/nextcloud/apps/ransomware_protection/lib/Analyzer.php line 218 OCA\RansomwareProtection\Analyzer->checkExtension() 3. /var/www/nextcloud/apps/ransomware_protection/lib/CacheWrapper.php line 57 OCA\RansomwareProtection\Analyzer->checkPath() 4. <> OCA\RansomwareProtection\CacheWrapper->formatCacheEntry() 5. /var/www/nextcloud/lib/private/Files/Cache/Wrapper/CacheWrapper.php line 104 array_map() 6. /var/www/nextcloud/lib/private/Files/View.php line 1470 OC\Files\Cache\Wrapper\CacheWrapper->getFolderContentsById() 7. /var/www/nextcloud/lib/private/Files/Node/Folder.php line 101 OC\Files\View->getDirectoryContent() 8. /var/www/nextcloud/apps/dav/lib/Connector/Sabre/Directory.php line 260 OC\Files\Node\Folder->getDirectoryListing() 9. /var/www/nextcloud/3rdparty/sabre/dav/lib/DAV/Tree.php line 200 OCA\DAV\Connector\Sabre\Directory->getChildren() 10. /var/www/nextcloud/3rdparty/sabre/dav/lib/DAV/Server.php line 900 Sabre\DAV\Tree->getChildren() 11. /var/www/nextcloud/3rdparty/sabre/dav/lib/DAV/Server.php line 982 Sabre\DAV\Server->generatePathNodes() 12. /var/www/nextcloud/3rdparty/sabre/dav/lib/DAV/Server.php line 1662 Sabre\DAV\Server->getPropertiesIteratorForPath() 13. /var/www/nextcloud/3rdparty/sabre/dav/lib/DAV/Server.php line 1647 Sabre\DAV\Server->writeMultiStatus() 14. /var/www/nextcloud/3rdparty/sabre/dav/lib/DAV/CorePlugin.php line 346 Sabre\DAV\Server->generateMultiStatus() 15. /var/www/nextcloud/3rdparty/sabre/event/lib/WildcardEmitterTrait.php line 89 Sabre\DAV\CorePlugin->httpPropFind() 16. /var/www/nextcloud/3rdparty/sabre/dav/lib/DAV/Server.php line 472 Sabre\DAV\Server->emit() 17. /var/www/nextcloud/3rdparty/sabre/dav/lib/DAV/Server.php line 253 Sabre\DAV\Server->invokeMethod() 18. /var/www/nextcloud/3rdparty/sabre/dav/lib/DAV/Server.php line 321 Sabre\DAV\Server->start() 19. /var/www/nextcloud/apps/dav/lib/Server.php line 360 Sabre\DAV\Server->exec() 20. /var/www/nextcloud/apps/dav/appinfo/v2/remote.php line 35 OCA\DAV\Server->exec() 21. /var/www/nextcloud/remote.php line 171 require_once("/var/www/nextcl ... p") PROPFIND /remote.php/dav/files/user/ from x.x.x.x by user at 2023-01-05T14:51:00-05:00 ``` The output of your config.php file in `/path/to/nextcloud` (make sure you remove any identifiable information!): ```auto { “instanceid”: “REMOVED SENSITIVE VALUE”, “passwordsalt”: “REMOVED SENSITIVE VALUE”, “secret”: “REMOVED SENSITIVE VALUE”, “trusted_domains”: [ “10.0.0.112” ], “datadirectory”: “REMOVED SENSITIVE VALUE”, “dbtype”: “mysql”, “version”: “25.0.2.3”, “overwrite.cli.url”: “http://10.0.0.112”, “dbname”: “REMOVED SENSITIVE VALUE”, “dbhost”: “REMOVED SENSITIVE VALUE”, “dbport”: “”, “dbtableprefix”: “oc_”, “mysql.utf8mb4”: true, “dbuser”: “REMOVED SENSITIVE VALUE”, “dbpassword”: “REMOVED SENSITIVE VALUE”, “installed”: true, “default_locale”: “en_US”, “default_phone_region”: “US”, “logtimezone”: “America/New_York”, “log_rotate_size”: 52428800, “htaccess.RewriteBase”: “/”, “twofactor_enforced”: “true”, “twofactor_enforced_groups”: , “twofactor_enforced_excluded_groups”: , “memcache.local”: “\OC\Memcache\Redis”, “memcache.locking”: “\OC\Memcache\Redis”, “filelocking.enabled”: true, “redis”: { “host”: “REMOVED SENSITIVE VALUE”, “port”: 0, “timeout”: 0 } } ``` The output of your Apache/nginx/system log in `/var/log/ ____ `: ```auto PASTE HERE ``` PASTE HERE ```auto Output errors in nextcloud.log in /var/www/ or as admin user in top right menu, filtering for errors. Use a pastebin service if necessary. PASTE HERE ``` ---
**Author:** ![wwe](https://help.nextcloud.com/user_avatar/help.nextcloud.com/wwe/32/72963_2.png) [@wwe](https://help.nextcloud.com/u/wwe)\ **Post date:** [December 14, 2024, 2:20pm UTC](https://help.nextcloud.com/t/php-error-preg-match-compilation-failed-quantifier-does-not-follow-a-repeatable-item-at-offset-0/153082/2 "2024-12-14T14:20:53Z")