[5.x]: On New entry -> New Pages entry: a mutex exception is thrown

[peter0503]

What happened?

Description

During the creation of a new page entry Craft is throwing a mutext exception. It does not happen always but very often. In the queue there are no pending jobs and we also tried to clear the entire caches to just make sure nothing is stucked.

we use yii\redis\Mutex

Steps to reproduce

1. Goto entries
2. Goto All entries
3. Add a new entry and select new pages entry

Expected behavior

New pages entry should be created.

Actual behavior

craft\errors\MutexException: Unable to acquire a lock for the structure 1 in /app/vendor/craftcms/cms/src/services/Structures.php:511
Stack trace:
#0 /app/vendor/craftcms/cms/src/services/Structures.php(375): craft\services\Structures->_doIt()
#1 /app/vendor/craftcms/cms/src/elements/Entry.php(2695): craft\services\Structures->appendToRoot()
#2 /app/vendor/craftcms/cms/src/elements/Entry.php(2636): craft\elements\Entry->_placeInStructure()
#3 /app/vendor/craftcms/cms/src/services/Elements.php(3773): craft\elements\Entry->afterSave()
#4 /app/vendor/craftcms/cms/src/services/Elements.php(1217): craft\services\Elements->craft\services\{closure}()
#5 /app/vendor/craftcms/cms/src/services/Elements.php(3578): craft\services\Elements->ensureBulkOp()
#6 /app/vendor/craftcms/cms/src/services/Elements.php(1303): craft\services\Elements->_saveElementInternal()
#7 /app/vendor/craftcms/cms/src/services/Drafts.php(261): craft\services\Elements->saveElement()
#8 /app/vendor/craftcms/cms/src/controllers/EntriesController.php(184): craft\services\Drafts->saveElementAsDraft()
#9 [internal function]: craft\controllers\EntriesController->actionCreate()
#10 /app/vendor/yiisoft/yii2/base/InlineAction.php(57): call_user_func_array()
#11 /app/vendor/yiisoft/yii2/base/Controller.php(178): yii\base\InlineAction->runWithParams()
#12 /app/vendor/yiisoft/yii2/base/Module.php(552): yii\base\Controller->runAction()
#13 /app/vendor/craftcms/cms/src/web/Application.php(350): yii\base\Module->runAction()
#14 /app/vendor/yiisoft/yii2/web/Application.php(103): craft\web\Application->runAction()
#15 /app/vendor/craftcms/cms/src/web/Application.php(318): yii\web\Application->handleRequest()
#16 /app/vendor/yiisoft/yii2/base/Application.php(384): craft\web\Application->handleRequest()
#17 /app/web/index.php(21): yii\base\Application->run()
#18 {main}

Craft CMS version

5.5.6

PHP version

8.3.14

Operating system and version

Linux 5.10.228-219.884.amzn2.x86_64

Database type and version

PostgreSQL 14.12

Image driver and version

GD 8.3.14

Installed plugins and versions

craftcms/aws-s3 2.2.1
putyourlightson/craft-amazon-ses 3.1.0
nystudio107/craft-code-field 5.0.0
doublesecretagency/craft-cpcss 3.0.0
doublesecretagency/craft-cpjs 3.0.0
mmikkel/cp-field-inspect 2.0.2
craftcms/feed-me 6.6.1
wbrowar/guide 4.0.0
verbb/hyper 2.2.1
verbb/icon-picker 3.0.2
nystudio107/craft-imageoptimize 5.0.3
verbb/navigation 3.0.5
spicyweb/craft-neo 5.2.19
jalendport/craft-preparse 3.0.0-alpha.2
craftcms/redactor 4.2.0
nystudio107/craft-retour 5.0.3
amici/craft-super-dynamic-fields 5.0.1
verbb/super-table 4.0.2
acclaro/translations v4.0.2
mutation/translate 4.0.2
verbb/workflow 3.0.5
internetztube/craft-element-relations 3.0.6
nystudio107/craft-seomatic 5.1.7
studioespresso/craft-dumper 5.0.1

[brandonkelly]

Can you try removing your custom mutex component from config/app.php? As of Craft 4.6.0, the default database-driven Mutex component is very reliable, regardless of your environment.