v6 - Can't add custom field to fieldset

[Cube38282]

Debug mode

• I have enabled debug mode
• I have read checked the Common Issues page

Describe the bug

Hello,

adding a Custom-Field to a Fieldset ends with Server Error 500

Reproduction steps

1. Add new Field to Fieldset
2. Save

Expected behavior

Fieldset doesn't error out after saving

Screenshots

No response

Snipe-IT Version

v6.0.0-RC-1 - build 6592 (develop)

Operating System

Debian GNU/Linux 10 (buster)

Web Server

Apache

PHP Version

8.0.14

Operating System

No response

Browser

No response

Version

No response

Device

No response

Operating System

No response

Browser

No response

Version

No response

Error messages

Stacktrace: https://flareapp.io/share/17xa4rb5#F60

Error is reproducible on the Develop Demo

laravel.log:
[2022-01-26 10:42:42] production.ERROR: Method App\Http\Controllers\CustomFieldsController::associate does not exist. {"userId":2,"exception":"[object] (BadMethodCallException(code: 0): Method App\\Http\\Controllers\\CustomFieldsController::associate does not exist. at /var/www/snipeittest/vendor/laravel/framework/src/Illuminate/Routing/Controller.php:68)
[stacktrace]
#0 /var/www/snipeittest/vendor/laravel/framework/src/Illuminate/Routing/Controller.php(54): Illuminate\\Routing\\Controller->__call()
#1 /var/www/snipeittest/vendor/laravel/framework/src/Illuminate/Routing/ControllerDispatcher.php(45): Illuminate\\Routing\\Controller->callAction()
#2 /var/www/snipeittest/vendor/laravel/framework/src/Illuminate/Routing/Route.php(262): Illuminate\\Routing\\ControllerDispatcher->dispatch()
#3 /var/www/snipeittest/vendor/laravel/framework/src/Illuminate/Routing/Route.php(205): Illuminate\\Routing\\Route->runController()
#4 /var/www/snipeittest/vendor/laravel/framework/src/Illuminate/Routing/Router.php(695): Illuminate\\Routing\\Route->run()
#5 /var/www/snipeittest/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(128): Illuminate\\Routing\\Router->Illuminate\\Routing\\{closure}()
#6 /var/www/snipeittest/vendor/laravel/framework/src/Illuminate/Auth/Middleware/Authenticate.php(44): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#7 /var/www/snipeittest/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(167): Illuminate\\Auth\\Middleware\\Authenticate->handle()
#8 /var/www/snipeittest/app/Http/Middleware/AssetCountForSidebar.php(55): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#9 /var/www/snipeittest/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(167): App\\Http\\Middleware\\AssetCountForSidebar->handle()
#10 /var/www/snipeittest/vendor/laravel/passport/src/Http/Middleware/CreateFreshApiToken.php(50): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#11 /var/www/snipeittest/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(167): Laravel\\Passport\\Http\\Middleware\\CreateFreshApiToken->handle()
#12 /var/www/snipeittest/app/Http/Middleware/CheckForTwoFactor.php(53): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#13 /var/www/snipeittest/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(167): App\\Http\\Middleware\\CheckForTwoFactor->handle()
#14 /var/www/snipeittest/app/Http/Middleware/CheckLocale.php(37): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#15 /var/www/snipeittest/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(167): App\\Http\\Middleware\\CheckLocale->handle()
#16 /var/www/snipeittest/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/VerifyCsrfToken.php(78): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#17 /var/www/snipeittest/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(167): Illuminate\\Foundation\\Http\\Middleware\\VerifyCsrfToken->handle()
#18 /var/www/snipeittest/vendor/laravel/framework/src/Illuminate/Cookie/Middleware/AddQueuedCookiesToResponse.php(37): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#19 /var/www/snipeittest/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(167): Illuminate\\Cookie\\Middleware\\AddQueuedCookiesToResponse->handle()
#20 /var/www/snipeittest/vendor/laravel/framework/src/Illuminate/Cookie/Middleware/EncryptCookies.php(67): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#21 /var/www/snipeittest/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(167): Illuminate\\Cookie\\Middleware\\EncryptCookies->handle()
#22 /var/www/snipeittest/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(103): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#23 /var/www/snipeittest/vendor/laravel/framework/src/Illuminate/Routing/Router.php(697): Illuminate\\Pipeline\\Pipeline->then()
#24 /var/www/snipeittest/vendor/laravel/framework/src/Illuminate/Routing/Router.php(672): Illuminate\\Routing\\Router->runRouteWithinStack()
#25 /var/www/snipeittest/vendor/laravel/framework/src/Illuminate/Routing/Router.php(636): Illuminate\\Routing\\Router->runRoute()
#26 /var/www/snipeittest/vendor/laravel/framework/src/Illuminate/Routing/Router.php(625): Illuminate\\Routing\\Router->dispatchToRoute()
#27 /var/www/snipeittest/vendor/laravel/framework/src/Illuminate/Foundation/Http/Kernel.php(167): Illuminate\\Routing\\Router->dispatch()
#28 /var/www/snipeittest/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(128): Illuminate\\Foundation\\Http\\Kernel->Illuminate\\Foundation\\Http\\{closure}()
#29 /var/www/snipeittest/vendor/livewire/livewire/src/DisableBrowserCache.php(19): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#30 /var/www/snipeittest/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(167): Livewire\\DisableBrowserCache->handle()
#31 /var/www/snipeittest/vendor/barryvdh/laravel-debugbar/src/Middleware/InjectDebugbar.php(67): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#32 /var/www/snipeittest/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(167): Barryvdh\\Debugbar\\Middleware\\InjectDebugbar->handle()
#33 /var/www/snipeittest/app/Http/Middleware/PreventBackHistory.php(23): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#34 /var/www/snipeittest/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(167): App\\Http\\Middleware\\PreventBackHistory->handle()
#35 /var/www/snipeittest/app/Http/Middleware/SecurityHeaders.php(26): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#36 /var/www/snipeittest/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(167): App\\Http\\Middleware\\SecurityHeaders->handle()
#37 /var/www/snipeittest/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/TransformsRequest.php(21): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#38 /var/www/snipeittest/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/ConvertEmptyStringsToNull.php(31): Illuminate\\Foundation\\Http\\Middleware\\TransformsRequest->handle()
#39 /var/www/snipeittest/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(167): Illuminate\\Foundation\\Http\\Middleware\\ConvertEmptyStringsToNull->handle()
#40 /var/www/snipeittest/app/Http/Middleware/CheckForDebug.php(25): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#41 /var/www/snipeittest/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(167): App\\Http\\Middleware\\CheckForDebug->handle()
#42 /var/www/snipeittest/app/Http/Middleware/CheckForSetup.php(25): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#43 /var/www/snipeittest/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(167): App\\Http\\Middleware\\CheckForSetup->handle()
#44 /var/www/snipeittest/vendor/fideloper/proxy/src/TrustProxies.php(57): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#45 /var/www/snipeittest/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(167): Fideloper\\Proxy\\TrustProxies->handle()
#46 /var/www/snipeittest/vendor/laravel/framework/src/Illuminate/View/Middleware/ShareErrorsFromSession.php(49): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#47 /var/www/snipeittest/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(167): Illuminate\\View\\Middleware\\ShareErrorsFromSession->handle()
#48 /var/www/snipeittest/vendor/laravel/framework/src/Illuminate/Session/Middleware/StartSession.php(121): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#49 /var/www/snipeittest/vendor/laravel/framework/src/Illuminate/Session/Middleware/StartSession.php(64): Illuminate\\Session\\Middleware\\StartSession->handleStatefulRequest()
#50 /var/www/snipeittest/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(167): Illuminate\\Session\\Middleware\\StartSession->handle()
#51 /var/www/snipeittest/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/PreventRequestsDuringMaintenance.php(86): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#52 /var/www/snipeittest/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(167): Illuminate\\Foundation\\Http\\Middleware\\PreventRequestsDuringMaintenance->handle()
#53 /var/www/snipeittest/app/Http/Middleware/NoSessionStore.php(28): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#54 /var/www/snipeittest/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(167): App\\Http\\Middleware\\NoSessionStore->handle()
#55 /var/www/snipeittest/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(103): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#56 /var/www/snipeittest/vendor/laravel/framework/src/Illuminate/Foundation/Http/Kernel.php(142): Illuminate\\Pipeline\\Pipeline->then()
#57 /var/www/snipeittest/vendor/laravel/framework/src/Illuminate/Foundation/Http/Kernel.php(111): Illuminate\\Foundation\\Http\\Kernel->sendRequestThroughRouter()
#58 /var/www/snipeittest/public/index.php(52): Illuminate\\Foundation\\Http\\Kernel->handle()
#59 {main}
"}

php -m:
[PHP Modules]
bcmath
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Zend OPcache
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[Zend Modules]
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Additional context

Server was upgraded to v6 via upgrade.php

[welcome]

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[snipe]

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