Hi there,

Every once in a while, our client's website is showing 500 error message saying there was a cache issue (You can see full error message below). The error will then automatically disappear about 10 mins afterwards and the website is back online again.

Any chance you could let us know how we can address this issue permanently? For the time being, we have changed the default cache driver from 'File' to 'Database'.

Please let us know. Many thanks.

=========== Full Error Messages ===========
ErrorException: unserialize(): Error at offset 8171 of 8182 bytes in /home/studyper/public_html/vendor/laravel/framework/src/Illuminate/Cache/FileStore.php:187
Stack trace:
#0 [internal function]: Illuminate\Foundation\Bootstrap\HandleExceptions->handleError(8, 'unserialize(): ...', '/home/studyper/...', 187, Array)
#1 /home/studyper/public_html/vendor/laravel/framework/src/Illuminate/Cache/FileStore.php(187): unserialize('a:1:{s:15:"live...')
#2 /home/studyper/public_html/vendor/laravel/framework/src/Illuminate/Cache/FileStore.php(49): Illuminate\Cache\FileStore->getPayload('content/static-...')
#3 /home/studyper/public_html/vendor/laravel/framework/src/Illuminate/Cache/Repository.php(86): Illuminate\Cache\FileStore->get('content/static-...')
#4 /home/studyper/public_html/vendor/october/rain/src/Halcyon/MemoryRepository.php(39): Illuminate\Cache\Repository->get('content/static-...', NULL)
#5 /home/studyper/public_html/vendor/laravel/framework/src/Illuminate/Cache/Repository.php(70): October\Rain\Halcyon\MemoryRepository->get('content/static-...')
#6 /home/studyper/public_html/vendor/october/rain/src/Halcyon/Builder.php(638): Illuminate\Cache\Repository->has('content/static-...')
#7 /home/studyper/public_html/vendor/october/rain/src/Halcyon/Builder.php(250): October\Rain\Halcyon\Builder->getCached(Array)
#8 /home/studyper/public_html/vendor/october/rain/src/Halcyon/Builder.php(238): October\Rain\Halcyon\Builder->get()
#9 /home/studyper/public_html/vendor/october/rain/src/Halcyon/Builder.php(228): October\Rain\Halcyon\Builder->first()
#10 /home/studyper/public_html/modules/cms/classes/CmsObject.php(110): October\Rain\Halcyon\Builder->find('live-safety.htm')
#11 /home/studyper/public_html/modules/cms/classes/CmsObject.php(133): Cms\Classes\CmsObject::loadCached(Object(Cms\Classes\Theme), 'live-safety.htm')
#12 /home/studyper/public_html/plugins/rainlab/pages/classes/PageList.php(40): Cms\Classes\CmsObject::listInTheme(Object(Cms\Classes\Theme), false)
#13 /home/studyper/public_html/plugins/rainlab/pages/classes/Router.php(112): RainLab\Pages\Classes\PageList->listPages()
#14 /home/studyper/public_html/plugins/rainlab/pages/classes/Router.php(86): RainLab\Pages\Classes\Router->loadUrlMap()
#15 /home/studyper/public_html/plugins/rainlab/pages/classes/Router.php(57): RainLab\Pages\Classes\Router->getUrlMap()
#16 /home/studyper/public_html/plugins/rainlab/pages/classes/Controller.php(42): RainLab\Pages\Classes\Router->findByUrl('/')
#17 /home/studyper/public_html/plugins/rainlab/pages/Plugin.php(117): RainLab\Pages\Classes\Controller->initCmsPage('/')
#18 [internal function]: RainLab\Pages\Plugin->RainLab\Pages\{closure}('/', Object(Cms\Classes\Router))
#19 /home/studyper/public_html/vendor/october/rain/src/Events/Dispatcher.php(233): call_user_func_array(Object(Closure), Array)
#20 /home/studyper/public_html/vendor/october/rain/src/Events/Dispatcher.php(197): October\Rain\Events\Dispatcher->dispatch('cms.router.befo...', Array, true)
#21 /home/studyper/public_html/vendor/laravel/framework/src/Illuminate/Support/Facades/Facade.php(221): October\Rain\Events\Dispatcher->fire('cms.router.befo...', Array, true)
#22 /home/studyper/public_html/modules/cms/classes/Router.php(93): Illuminate\Support\Facades\Facade::__callStatic('fire', Array)
#23 /home/studyper/public_html/modules/cms/classes/Controller.php(153): Cms\Classes\Router->findByUrl('/')
#24 /home/studyper/public_html/modules/cms/classes/CmsController.php(50): Cms\Classes\Controller->run('/')
#25 [internal function]: Cms\Classes\CmsController->run('/')
#26 /home/studyper/public_html/vendor/laravel/framework/src/Illuminate/Routing/Controller.php(54): call_user_func_array(Array, Array)
#27 /home/studyper/public_html/vendor/laravel/framework/src/Illuminate/Routing/ControllerDispatcher.php(45): Illuminate\Routing\Controller->callAction('run', Array)
#28 /home/studyper/public_html/vendor/laravel/framework/src/Illuminate/Routing/Route.php(212): Illuminate\Routing\ControllerDispatcher->dispatch(Object(Illuminate\Routing\Route), Object(Cms\Classes\CmsController), 'run')
#29 /home/studyper/public_html/vendor/laravel/framework/src/Illuminate/Routing/Route.php(169): Illuminate\Routing\Route->runController()
#30 /home/studyper/public_html/vendor/laravel/framework/src/Illuminate/Routing/Router.php(658): Illuminate\Routing\Route->run()
#31 /home/studyper/public_html/vendor/laravel/framework/src/Illuminate/Routing/Pipeline.php(30): Illuminate\Routing\Router->Illuminate\Routing\{closure}(Object(Illuminate\Http\Request))
#32 /home/studyper/public_html/plugins/rainlab/translate/classes/LocaleMiddleware.php(29): Illuminate\Routing\Pipeline->Illuminate\Routing\{closure}(Object(Illuminate\Http\Request))
#33 /home/studyper/public_html/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(149): RainLab\Translate\Classes\LocaleMiddleware->handle(Object(Illuminate\Http\Request), Object(Closure))
#34 /home/studyper/public_html/vendor/laravel/framework/src/Illuminate/Routing/Pipeline.php(53): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}(Object(Illuminate\Http\Request))
#35 /home/studyper/public_html/vendor/laravel/framework/src/Illuminate/Routing/Middleware/SubstituteBindings.php(41): Illuminate\Routing\Pipeline->Illuminate\Routing\{closure}(Object(Illuminate\Http\Request))
#36 /home/studyper/public_html/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(149): Illuminate\Routing\Middleware\SubstituteBindings->handle(Object(Illuminate\Http\Request), Object(Closure))
#37 /home/studyper/public_html/vendor/laravel/framework/src/Illuminate/Routing/Pipeline.php(53): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}(Object(Illuminate\Http\Request))
#38 /home/studyper/public_html/vendor/laravel/framework/src/Illuminate/View/Middleware/ShareErrorsFromSession.php(49): Illuminate\Routing\Pipeline->Illuminate\Routing\{closure}(Object(Illuminate\Http\Request))
#39 /home/studyper/public_html/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(149): Illuminate\View\Middleware\ShareErrorsFromSession->handle(Object(Illuminate\Http\Request), Object(Closure))
#40 /home/studyper/public_html/vendor/laravel/framework/src/Illuminate/Routing/Pipeline.php(53): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}(Object(Illuminate\Http\Request))
#41 /home/studyper/public_html/vendor/laravel/framework/src/Illuminate/Session/Middleware/StartSession.php(63): Illuminate\Routing\Pipeline->Illuminate\Routing\{closure}(Object(Illuminate\Http\Request))
#42 /home/studyper/public_html/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(149): Illuminate\Session\Middleware\StartSession->handle(Object(Illuminate\Http\Request), Object(Closure))
#43 /home/studyper/public_html/vendor/laravel/framework/src/Illuminate/Routing/Pipeline.php(53): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}(Object(Illuminate\Http\Request))
#44 /home/studyper/public_html/vendor/laravel/framework/src/Illuminate/Cookie/Middleware/AddQueuedCookiesToResponse.php(37): Illuminate\Routing\Pipeline->Illuminate\Routing\{closure}(Object(Illuminate\Http\Request))
#45 /home/studyper/public_html/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(149): Illuminate\Cookie\Middleware\AddQueuedCookiesToResponse->handle(Object(Illuminate\Http\Request), Object(Closure))
#46 /home/studyper/public_html/vendor/laravel/framework/src/Illuminate/Routing/Pipeline.php(53): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}(Object(Illuminate\Http\Request))
#47 /home/studyper/public_html/vendor/laravel/framework/src/Illuminate/Cookie/Middleware/EncryptCookies.php(66): Illuminate\Routing\Pipeline->Illuminate\Routing\{closure}(Object(Illuminate\Http\Request))
#48 /home/studyper/public_html/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(149): Illuminate\Cookie\Middleware\EncryptCookies->handle(Object(Illuminate\Http\Request), Object(Closure))
#49 /home/studyper/public_html/vendor/laravel/framework/src/Illuminate/Routing/Pipeline.php(53): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}(Object(Illuminate\Http\Request))
#50 /home/studyper/public_html/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(102): Illuminate\Routing\Pipeline->Illuminate\Routing\{closure}(Object(Illuminate\Http\Request))
#51 /home/studyper/public_html/vendor/laravel/framework/src/Illuminate/Routing/Router.php(660): Illuminate\Pipeline\Pipeline->then(Object(Closure))
#52 /home/studyper/public_html/vendor/laravel/framework/src/Illuminate/Routing/Router.php(635): Illuminate\Routing\Router->runRouteWithinStack(Object(Illuminate\Routing\Route), Object(Illuminate\Http\Request))
#53 /home/studyper/public_html/vendor/laravel/framework/src/Illuminate/Routing/Router.php(601): Illuminate\Routing\Router->runRoute(Object(Illuminate\Http\Request), Object(Illuminate\Routing\Route))
#54 /home/studyper/public_html/vendor/october/rain/src/Router/CoreRouter.php(20): Illuminate\Routing\Router->dispatchToRoute(Object(Illuminate\Http\Request))
#55 /home/studyper/public_html/vendor/laravel/framework/src/Illuminate/Foundation/Http/Kernel.php(176): October\Rain\Router\CoreRouter->dispatch(Object(Illuminate\Http\Request))
#56 /home/studyper/public_html/vendor/laravel/framework/src/Illuminate/Routing/Pipeline.php(30): Illuminate\Foundation\Http\Kernel->Illuminate\Foundation\Http\{closure}(Object(Illuminate\Http\Request))
#57 /home/studyper/public_html/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/CheckForMaintenanceMode.php(46): Illuminate\Routing\Pipeline->Illuminate\Routing\{closure}(Object(Illuminate\Http\Request))
#58 /home/studyper/public_html/vendor/october/rain/src/Foundation/Http/Middleware/CheckForMaintenanceMode.php(24): Illuminate\Foundation\Http\Middleware\CheckForMaintenanceMode->handle(Object(Illuminate\Http\Request), Object(Closure))
#59 /home/studyper/public_html/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(149): October\Rain\Foundation\Http\Middleware\CheckForMaintenanceMode->handle(Object(Illuminate\Http\Request), Object(Closure))
#60 /home/studyper/public_html/vendor/laravel/framework/src/Illuminate/Routing/Pipeline.php(53): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}(Object(Illuminate\Http\Request))
#61 /home/studyper/public_html/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(102): Illuminate\Routing\Pipeline->Illuminate\Routing\{closure}(Object(Illuminate\Http\Request))
#62 /home/studyper/public_html/vendor/laravel/framework/src/Illuminate/Foundation/Http/Kernel.php(151): Illuminate\Pipeline\Pipeline->then(Object(Closure))
#63 /home/studyper/public_html/vendor/laravel/framework/src/Illuminate/Foundation/Http/Kernel.php(116): Illuminate\Foundation\Http\Kernel->sendRequestThroughRouter(Object(Illuminate\Http\Request))
#64 /home/studyper/public_html/index.php(43): Illuminate\Foundation\Http\Kernel->handle(Object(Illuminate\Http\Request))
#65 {main}

Last updated 4 years ago

@glideagency Do you have an example of the actual cache file content when this error occurs? From what I can see, it appears to be an error with the unserialize command, so it's likely the content of the cache file is corrupted in some way.

@BennoThommo Thanks for looking into the issue and the updates. We were unable to retain the actual cache file as the error came up unpredictably. By the time we notice, the website already go back online.

The website seems to be very stable after we switched to database drive so I'm assuming we can keep using it?

Kind regards.