# Module 'apcu' already loaded at Unknown#0 **URL:** \ **Category:** ℹ️ Support\ **Tags:** nc19\ **Created:** [September 3, 2020, 8:16pm UTC](https://help.nextcloud.com/t/module-apcu-already-loaded-at-unknown-0/91384 "2020-09-03T20:16:52Z")\ **Posts on this page:** 10\ **Page:** 1
**Author:** ![alejandrod](https://help.nextcloud.com/user_avatar/help.nextcloud.com/alejandrod/32/8479_2.png) [@alejandrod](https://help.nextcloud.com/u/alejandrod)\ **Post date:** [September 3, 2020, 8:16pm UTC](https://help.nextcloud.com/t/module-apcu-already-loaded-at-unknown-0/91384/1 "2020-09-03T20:16:52Z")
> **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 _19.0.2_: Operating system and version _Ubuntu 18.04_: Apache or nginx version _Apache 2.4.25_: PHP version _7.4_: The event log in settings / admin / logging is frequently filled with this error. I have already read about this error articles but I cannot find a possible solution. Could you give me some help? ``` root@cloud:~# php -i | grep apc /etc/php/7.4/cli/conf.d/20-apcu.ini, /etc/php/7.4/cli/conf.d/25-apcu_bc.ini apc apcu apc.coredump_unmap => Off => Off apc.enable_cli => Off => Off apc.enabled => On => On apc.entries_hint => 4096 => 4096 apc.gc_ttl => 3600 => 3600 apc.mmap_file_mask => no value => no value apc.preload_path => no value => no value apc.serializer => php => php apc.shm_segments => 1 => 1 apc.shm_size => 32M => 32M apc.slam_defense => Off => Off apc.smart => 0 => 0 apc.ttl => 0 => 0 apc.use_request_time => On => On ``` The output of your Nextcloud log in **Admin \> Logging** : ```auto [PHP] Error: Module 'apcu' already loaded at Unknown#0 GET /ocm-provider/ from xxx.xxx.xxx.xxx by myuser at 2020-09-03T15:41:51-04:00 ``` The output of your config.php file in `/path/to/nextcloud` (make sure you remove any identifiable information!): ```auto "system": { "instanceid": " ***REMOVED SENSITIVE VALUE***", "passwordsalt": " ***REMOVED SENSITIVE VALUE***", "secret": " ***REMOVED SENSITIVE VALUE***", "trusted_domains": [ "url.dominio.net", "1.1.1.1" ], "datadirectory": " ***REMOVED SENSITIVE VALUE***", "dbtype": "mysql", "version": "19.0.2.2", "overwrite.cli.url": "https:\/\/url.dominio.net", "htaccess.RewriteBase": "\/", "dbname": " ***REMOVED SENSITIVE VALUE***", "dbhost": " ***REMOVED SENSITIVE VALUE***", "dbport": "", "dbtableprefix": "oc_", "mysql.utf8mb4": true, "dbuser": " ***REMOVED SENSITIVE VALUE***", "dbpassword": " ***REMOVED SENSITIVE VALUE***", "installed": true, "skeletondirectory": "", "mail_from_address": " ***REMOVED SENSITIVE VALUE***", "mail_smtpmode": "smtp", "mail_sendmailmode": "smtp", "mail_domain": " ***REMOVED SENSITIVE VALUE***", "mail_smtpauth": 1, "mail_smtpauthtype": "LOGIN", "mail_smtphost": " ***REMOVED SENSITIVE VALUE***", "mail_smtpport": "25", "mail_smtpname": " ***REMOVED SENSITIVE VALUE***", "mail_smtppassword": " ***REMOVED SENSITIVE VALUE***", "default_language": "es", "ldapIgnoreNamingRules": false, "ldapProviderFactory": "OCA\\User_LDAP\\LDAPProviderFactory", "memcache.local": "\\OC\\Memcache\\APCu", "memcache.distributed": "\\OC\\Memcache\\Redis", "memcache.locking": "\\OC\\Memcache\\Redis", "redis": { "host": " ***REMOVED SENSITIVE VALUE***", "port": 6379 }, ``` ---
**Author:** ![Vincent\_Stans](https://help.nextcloud.com/user_avatar/help.nextcloud.com/vincent_stans/32/17415_2.png) [@Vincent\_Stans](https://help.nextcloud.com/u/Vincent_Stans)\ **Post date:** [September 4, 2020, 2:42am UTC](https://help.nextcloud.com/t/module-apcu-already-loaded-at-unknown-0/91384/2 "2020-09-04T02:42:05Z")
Try commenting apcu out ``` sudo sed -i 's/ext/;ext/' /etc/php/7.4/apache/conf.d/20-apcu ``` `sudo systemctl reload apache2` ---
**Author:** ![alejandrod](https://help.nextcloud.com/user_avatar/help.nextcloud.com/alejandrod/32/8479_2.png) [@alejandrod](https://help.nextcloud.com/u/alejandrod)\ **Post date:** [September 5, 2020, 9:40pm UTC](https://help.nextcloud.com/t/module-apcu-already-loaded-at-unknown-0/91384/3 "2020-09-05T21:40:58Z")
Hello @Vincent_Stans , thanks for the contribution, then doing that procedure I get this error which tells me that this is not the solution. Any other ideas regarding this error. ``` [PHP] Error: PHP Startup: Unable to load dynamic library 'apc.so' (tried: /usr/lib/php/20190902/apc.so (/usr/lib/php/20190902/apc.so: undefined symbol: zif_apcu_store), /usr/lib/php/20190902/apc.so.so (/usr/lib/php/20190902/apc.so.so: cannot open shared object file: No such file or directory)) at Unknown#0 ``` ---
**Author:** ![Vincent\_Stans](https://help.nextcloud.com/user_avatar/help.nextcloud.com/vincent_stans/32/17415_2.png) [@Vincent\_Stans](https://help.nextcloud.com/u/Vincent_Stans)\ **Post date:** [September 6, 2020, 8:26am UTC](https://help.nextcloud.com/t/module-apcu-already-loaded-at-unknown-0/91384/4 "2020-09-06T08:26:26Z")
You should find in your php.ini file and your dir /etc/php/7.x/_/conf.d/_.ini for a duplicate of the loading module. It is hard to tell you where it is loaded twice. You should search for a php solution as it is not a nextcloud issue. ---
**Author:** ![alejandrod](https://help.nextcloud.com/user_avatar/help.nextcloud.com/alejandrod/32/8479_2.png) [@alejandrod](https://help.nextcloud.com/u/alejandrod)\ **Post date:** [September 6, 2020, 6:38pm UTC](https://help.nextcloud.com/t/module-apcu-already-loaded-at-unknown-0/91384/5 "2020-09-06T18:38:23Z")
ok, anyway thanks a lot for the help ---
**Author:** ![alejandrod](https://help.nextcloud.com/user_avatar/help.nextcloud.com/alejandrod/32/8479_2.png) [@alejandrod](https://help.nextcloud.com/u/alejandrod)\ **Post date:** [September 18, 2020, 2:02am UTC](https://help.nextcloud.com/t/module-apcu-already-loaded-at-unknown-0/91384/6 "2020-09-18T02:02:49Z")
hello again, it turns out that reviewing the history of the commands executed in the console I filtered which could be apcu. To my surprise I had already enabled apcu some time ago but not exactly in the default file but in a new file that I named `cache.ini` which I did not check. The problem was quickly resolved upon realizing the error. Greetings and thanks again. ---
**Author:** ![earth](https://help.nextcloud.com/letter_avatar/earth/32/5_5575768a8748004e209b776fc1b2916d.png) [@earth](https://help.nextcloud.com/u/earth)\ **Post date:** [October 20, 2020, 3:24am UTC](https://help.nextcloud.com/t/module-apcu-already-loaded-at-unknown-0/91384/7 "2020-10-20T03:24:26Z")
Dear, please guide i am unable to find mine here is my gerp for apc /etc/php/7.4/cli/conf.d/20-apcu.ini, /etc/php/7.4/cli/conf.d/25-apcu\_bc.ini apc apcu apc.coredump\_unmap =\> Off =\> Off apc.enable\_cli =\> On =\> On apc.enabled =\> On =\> On apc.entries\_hint =\> 4096 =\> 4096 apc.gc\_ttl =\> 3600 =\> 3600 apc.mmap\_file\_mask =\> no value =\> no value apc.preload\_path =\> no value =\> no value apc.serializer =\> php =\> php apc.shm\_segments =\> 1 =\> 1 apc.shm\_size =\> 32M =\> 32M apc.slam\_defense =\> Off =\> Off apc.smart =\> 0 =\> 0 apc.ttl =\> 0 =\> 0 apc.use\_request\_time =\> Off =\> Off ---
**Author:** ![alejandrod](https://help.nextcloud.com/user_avatar/help.nextcloud.com/alejandrod/32/8479_2.png) [@alejandrod](https://help.nextcloud.com/u/alejandrod)\ **Post date:** [November 6, 2020, 4:23pm UTC](https://help.nextcloud.com/t/module-apcu-already-loaded-at-unknown-0/91384/8 "2020-11-06T16:23:43Z")
hi friend, check that you don’t have a file called cache.ini, there was the additional configuration repeated in my case ---
**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 12, 2024, 8:19am UTC](https://help.nextcloud.com/t/module-apcu-already-loaded-at-unknown-0/91384/9 "2024-12-12T08:19:54Z")
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**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 12, 2024, 8:19am UTC](https://help.nextcloud.com/t/module-apcu-already-loaded-at-unknown-0/91384/10 "2024-12-12T08:19:55Z")