Referenced by page leads to HTTP 500

[ChriFo]

Describe the Bug

Clicking the link "referenced by x items" on a page leads to a error page showing "An Error Occurred".

Steps to Reproduce

Go to page which is referenced on other pages.
Click "Referenced by x items" in the details section.

Expected Behaviour

Show a list of pages which referencing the current page.

Screenshots or Additional Context

In the Apache error log the follwing stacktrace is shown:

Details

[previous exception] [object] (Error(code: 0): Call to a member function relationLoaded() on null at /var/www/bookstack/storage/framework/views/fe9e9a75c7b06bb274ed8e9db5ddb1b04cc1f8c0.php:13)
[stacktrace]
#0 /var/www/bookstack/vendor/laravel/framework/src/Illuminate/Filesystem/Filesystem.php(109): require()
#1 /var/www/bookstack/vendor/laravel/framework/src/Illuminate/Filesystem/Filesystem.php(110): Illuminate\\Filesystem\\Filesystem::Illuminate\\Filesystem\\{closure}()
#2 /var/www/bookstack/vendor/laravel/framework/src/Illuminate/View/Engines/PhpEngine.php(58): Illuminate\\Filesystem\\Filesystem->getRequire()
#3 /var/www/bookstack/vendor/laravel/framework/src/Illuminate/View/Engines/CompilerEngine.php(70): Illuminate\\View\\Engines\\PhpEngine->evaluatePath()
#4 /var/www/bookstack/vendor/laravel/framework/src/Illuminate/View/View.php(195): Illuminate\\View\\Engines\\CompilerEngine->get()
#5 /var/www/bookstack/vendor/laravel/framework/src/Illuminate/View/View.php(178): Illuminate\\View\\View->getContents()
#6 /var/www/bookstack/vendor/laravel/framework/src/Illuminate/View/View.php(147): Illuminate\\View\\View->renderContents()
#7 /var/www/bookstack/storage/framework/views/12f1944faa5fa5e17b85a00c73440e4e628f39ad.php(4): Illuminate\\View\\View->render()
#8 /var/www/bookstack/vendor/laravel/framework/src/Illuminate/Filesystem/Filesystem.php(109): require('...')
#9 /var/www/bookstack/vendor/laravel/framework/src/Illuminate/Filesystem/Filesystem.php(110): Illuminate\\Filesystem\\Filesystem::Illuminate\\Filesystem\\{closure}()
#10 /var/www/bookstack/vendor/laravel/framework/src/Illuminate/View/Engines/PhpEngine.php(58): Illuminate\\Filesystem\\Filesystem->getRequire()
#11 /var/www/bookstack/vendor/laravel/framework/src/Illuminate/View/Engines/CompilerEngine.php(70): Illuminate\\View\\Engines\\PhpEngine->evaluatePath()
#12 /var/www/bookstack/vendor/laravel/framework/src/Illuminate/View/View.php(195): Illuminate\\View\\Engines\\CompilerEngine->get()
#13 /var/www/bookstack/vendor/laravel/framework/src/Illuminate/View/View.php(178): Illuminate\\View\\View->getContents()
#14 /var/www/bookstack/vendor/laravel/framework/src/Illuminate/View/View.php(147): Illuminate\\View\\View->renderContents()
#15 /var/www/bookstack/storage/framework/views/675c70c631effd4c03dc0a8964a3426b15ebde28.php(7): Illuminate\\View\\View->render()
#16 /var/www/bookstack/vendor/laravel/framework/src/Illuminate/Filesystem/Filesystem.php(109): require('...')
#17 /var/www/bookstack/vendor/laravel/framework/src/Illuminate/Filesystem/Filesystem.php(110): Illuminate\\Filesystem\\Filesystem::Illuminate\\Filesystem\\{closure}()
#18 /var/www/bookstack/vendor/laravel/framework/src/Illuminate/View/Engines/PhpEngine.php(58): Illuminate\\Filesystem\\Filesystem->getRequire()
#19 /var/www/bookstack/vendor/laravel/framework/src/Illuminate/View/Engines/CompilerEngine.php(70): Illuminate\\View\\Engines\\PhpEngine->evaluatePath()
#20 /var/www/bookstack/vendor/laravel/framework/src/Illuminate/View/View.php(195): Illuminate\\View\\Engines\\CompilerEngine->get()
#21 /var/www/bookstack/vendor/laravel/framework/src/Illuminate/View/View.php(178): Illuminate\\View\\View->getContents()
#22 /var/www/bookstack/vendor/laravel/framework/src/Illuminate/View/View.php(147): Illuminate\\View\\View->renderContents()
#23 /var/www/bookstack/storage/framework/views/ded2f0ef4467bda4381393269b20f3235deff450.php(17): Illuminate\\View\\View->render()
#24 /var/www/bookstack/vendor/laravel/framework/src/Illuminate/Filesystem/Filesystem.php(109): require('...')
#25 /var/www/bookstack/vendor/laravel/framework/src/Illuminate/Filesystem/Filesystem.php(110): Illuminate\\Filesystem\\Filesystem::Illuminate\\Filesystem\\{closure}()
#26 /var/www/bookstack/vendor/laravel/framework/src/Illuminate/View/Engines/PhpEngine.php(58): Illuminate\\Filesystem\\Filesystem->getRequire()
#27 /var/www/bookstack/vendor/laravel/framework/src/Illuminate/View/Engines/CompilerEngine.php(70): Illuminate\\View\\Engines\\PhpEngine->evaluatePath()
#28 /var/www/bookstack/vendor/laravel/framework/src/Illuminate/View/View.php(195): Illuminate\\View\\Engines\\CompilerEngine->get()
#29 /var/www/bookstack/vendor/laravel/framework/src/Illuminate/View/View.php(178): Illuminate\\View\\View->getContents()
#30 /var/www/bookstack/vendor/laravel/framework/src/Illuminate/View/View.php(147): Illuminate\\View\\View->renderContents()
#31 /var/www/bookstack/vendor/laravel/framework/src/Illuminate/Http/Response.php(69): Illuminate\\View\\View->render()
#32 /var/www/bookstack/vendor/laravel/framework/src/Illuminate/Http/Response.php(35): Illuminate\\Http\\Response->setContent()
#33 /var/www/bookstack/vendor/laravel/framework/src/Illuminate/Routing/Router.php(906): Illuminate\\Http\\Response->__construct()
#34 /var/www/bookstack/vendor/laravel/framework/src/Illuminate/Routing/Router.php(875): Illuminate\\Routing\\Router::toResponse()
#35 /var/www/bookstack/vendor/laravel/framework/src/Illuminate/Routing/Router.php(797): Illuminate\\Routing\\Router->prepareResponse()
#36 /var/www/bookstack/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(141): Illuminate\\Routing\\Router->Illuminate\\Routing\\{closure}()
#37 /var/www/bookstack/app/Http/Middleware/Authenticate.php(23): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#38 /var/www/bookstack/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(180): BookStack\\Http\\Middleware\\Authenticate->handle()
#39 /var/www/bookstack/app/Http/Middleware/Localization.php(32): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#40 /var/www/bookstack/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(180): BookStack\\Http\\Middleware\\Localization->handle()
#41 /var/www/bookstack/app/Http/Middleware/RunThemeActions.php(26): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#42 /var/www/bookstack/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(180): BookStack\\Http\\Middleware\\RunThemeActions->handle()
#43 /var/www/bookstack/app/Http/Middleware/CheckEmailConfirmed.php(47): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#44 /var/www/bookstack/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(180): BookStack\\Http\\Middleware\\CheckEmailConfirmed->handle()
#45 /var/www/bookstack/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/VerifyCsrfToken.php(78): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#46 /var/www/bookstack/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(180): Illuminate\\Foundation\\Http\\Middleware\\VerifyCsrfToken->handle()
#47 /var/www/bookstack/vendor/laravel/framework/src/Illuminate/View/Middleware/ShareErrorsFromSession.php(49): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#48 /var/www/bookstack/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(180): Illuminate\\View\\Middleware\\ShareErrorsFromSession->handle()
#49 /var/www/bookstack/vendor/laravel/framework/src/Illuminate/Session/Middleware/StartSession.php(121): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#50 /var/www/bookstack/vendor/laravel/framework/src/Illuminate/Session/Middleware/StartSession.php(64): Illuminate\\Session\\Middleware\\StartSession->handleStatefulRequest()
#51 /var/www/bookstack/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(180): Illuminate\\Session\\Middleware\\StartSession->handle()
#52 /var/www/bookstack/vendor/laravel/framework/src/Illuminate/Cookie/Middleware/AddQueuedCookiesToResponse.php(37): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#53 /var/www/bookstack/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(180): Illuminate\\Cookie\\Middleware\\AddQueuedCookiesToResponse->handle()
#54 /var/www/bookstack/vendor/laravel/framework/src/Illuminate/Cookie/Middleware/EncryptCookies.php(67): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#55 /var/www/bookstack/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(180): Illuminate\\Cookie\\Middleware\\EncryptCookies->handle()
#56 /var/www/bookstack/app/Http/Middleware/ApplyCspRules.php(33): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#57 /var/www/bookstack/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(180): BookStack\\Http\\Middleware\\ApplyCspRules->handle()
#58 /var/www/bookstack/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(116): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#59 /var/www/bookstack/vendor/laravel/framework/src/Illuminate/Routing/Router.php(797): Illuminate\\Pipeline\\Pipeline->then()
#60 /var/www/bookstack/vendor/laravel/framework/src/Illuminate/Routing/Router.php(776): Illuminate\\Routing\\Router->runRouteWithinStack()
#61 /var/www/bookstack/vendor/laravel/framework/src/Illuminate/Routing/Router.php(740): Illuminate\\Routing\\Router->runRoute()
#62 /var/www/bookstack/vendor/laravel/framework/src/Illuminate/Routing/Router.php(729): Illuminate\\Routing\\Router->dispatchToRoute()
#63 /var/www/bookstack/vendor/laravel/framework/src/Illuminate/Foundation/Http/Kernel.php(190): Illuminate\\Routing\\Router->dispatch()
#64 /var/www/bookstack/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(141): Illuminate\\Foundation\\Http\\Kernel->Illuminate\\Foundation\\Http\\{closure}()
#65 /var/www/bookstack/app/Http/Middleware/PreventResponseCaching.php(21): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#66 /var/www/bookstack/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(180): BookStack\\Http\\Middleware\\PreventResponseCaching->handle()
#67 /var/www/bookstack/vendor/laravel/framework/src/Illuminate/Http/Middleware/TrustProxies.php(39): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#68 /var/www/bookstack/app/Http/Middleware/TrustProxies.php(41): Illuminate\\Http\\Middleware\\TrustProxies->handle()
#69 /var/www/bookstack/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(180): BookStack\\Http\\Middleware\\TrustProxies->handle()
#70 /var/www/bookstack/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/TransformsRequest.php(21): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#71 /var/www/bookstack/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/TrimStrings.php(40): Illuminate\\Foundation\\Http\\Middleware\\TransformsRequest->handle()
#72 /var/www/bookstack/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(180): Illuminate\\Foundation\\Http\\Middleware\\TrimStrings->handle()
#73 /var/www/bookstack/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/ValidatePostSize.php(27): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#74 /var/www/bookstack/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(180): Illuminate\\Foundation\\Http\\Middleware\\ValidatePostSize->handle()
#75 /var/www/bookstack/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/PreventRequestsDuringMaintenance.php(86): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#76 /var/www/bookstack/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(180): Illuminate\\Foundation\\Http\\Middleware\\PreventRequestsDuringMaintenance->handle()
#77 /var/www/bookstack/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(116): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#78 /var/www/bookstack/vendor/laravel/framework/src/Illuminate/Foundation/Http/Kernel.php(165): Illuminate\\Pipeline\\Pipeline->then()
#79 /var/www/bookstack/vendor/laravel/framework/src/Illuminate/Foundation/Http/Kernel.php(134): Illuminate\\Foundation\\Http\\Kernel->sendRequestThroughRouter()
#80 /var/www/bookstack/public/index.php(52): Illuminate\\Foundation\\Http\\Kernel->handle()
#81 {main}
"} 

Browser Details

No response

Exact BookStack Version

24.02.2

[ssddanbrown]

Thanks for reporting @ChriFo.
I can confirm and re-produce this, specifically when the references list may include a page that's in the recycle bin.

If possible, it would be great to confirm your case is the same, either by viewing/restoring the content of the recycle bin to see if cross-references exist, or by emptying the recycle bin to see if the references page then loads without error.

[ChriFo]

I can confirm after emptying the recycle bin (two references were removed) the "references" page is shown without errors in the log.

[ssddanbrown]

@ChriFo Thanks for confirming. I've assigned this to the next feature release otherwise it could be part of a sooner patch release.

[ssddanbrown]

This has now been addressed within a33dbcb, and is due to be part of the next patch release. Thanks again @ChriFo for reporting.