Cannot edit device

[KpuCko]

Hello,
This morning I wanted to rename one of my devices in LibreNMS, unfortunately I can’t do it, when I click on the edit button I’ve got an error message which says “Oops something went wrong”, check the attachment.

Steps to reproduce an issue - Click on edit device button.
The output of ./validate.php - Here is it:

librenms@monitoring:~$ ./validate.php
====================================
Component | Version
--------- | -------
LibreNMS  | 21.2.0-2-gd20e1bdf5
DB Schema | 2021_02_08_224355_fix_invalid_dates (199)
PHP       | 8.0.2
Python    | 3.7.3
MySQL     | 10.3.27-MariaDB-0+deb10u1
RRDTool   | 1.7.1
SNMP      | NET-SNMP 5.7.3
====================================

[OK]    Composer Version: 2.0.9
[OK]    Dependencies up-to-date.
[OK]    Database connection successful
[OK]    Database schema correct
[WARN]  IPv6 is disabled on your server, you will not be able to add IPv6 devices.
librenms@monitoring:~$

If it’s an issue with the WebUI then please consider including a screenshot and the browser version you are using.

Thanks in advance.

[KpuCko]

This is the error shown in librenms.log:

/opt/librenms/poller.php 25 2021-02-24 08:15:04 - 1 devices polled in 2.200 secs
/opt/librenms/poller.php 30 2021-02-24 08:15:05 - 1 devices polled in 2.420 secs
/opt/librenms/poller.php 36 2021-02-24 08:15:05 - 1 devices polled in 2.528 secs
/opt/librenms/poller.php 26 2021-02-24 08:15:05 - 1 devices polled in 2.601 secs
/opt/librenms/poller.php 32 2021-02-24 08:15:05 - 1 devices polled in 2.829 secs
/opt/librenms/poller.php 17 2021-02-24 08:15:07 - 1 devices polled in 4.142 secs
/opt/librenms/poller.php 35 2021-02-24 08:15:09 - 1 devices polled in 6.726 secs
/opt/librenms/poller.php 31 2021-02-24 08:15:19 - 1 devices polled in 17.55 secs
/opt/librenms/poller.php 28 2021-02-24 08:15:21 - 1 devices polled in 18.25 secs
/opt/librenms/poller.php 27 2021-02-24 08:15:22 - 1 devices polled in 19.83 secs
[2021-02-24 08:15:47] production.ERROR: count(): Argument #1 ($var) must be of type Countable|array, null given {"userId":1,"exception":"[object] (TypeError(code: 0): count(): Argument #1 ($var) must be of type Countable|array, null given at /opt/librenms/includes/html/pages/device/edit.inc.php:22)
[stacktrace]
#0 /opt/librenms/app/Http/Controllers/DeviceController.php(122): include()
#1 /opt/librenms/app/Http/Controllers/DeviceController.php(104): App\\Http\\Controllers\\DeviceController->renderLegacyTab()
#2 /opt/librenms/vendor/laravel/framework/src/Illuminate/Routing/Controller.php(54): App\\Http\\Controllers\\DeviceController->index()
#3 /opt/librenms/vendor/laravel/framework/src/Illuminate/Routing/ControllerDispatcher.php(45): Illuminate\\Routing\\Controller->callAction()
#4 /opt/librenms/vendor/laravel/framework/src/Illuminate/Routing/Route.php(254): Illuminate\\Routing\\ControllerDispatcher->dispatch()
#5 /opt/librenms/vendor/laravel/framework/src/Illuminate/Routing/Route.php(197): Illuminate\\Routing\\Route->runController()
#6 /opt/librenms/vendor/laravel/framework/src/Illuminate/Routing/Router.php(693): Illuminate\\Routing\\Route->run()
#7 /opt/librenms/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(128): Illuminate\\Routing\\Router->Illuminate\\Routing\\{closure}()
#8 /opt/librenms/app/Http/Middleware/LoadUserPreferences.php(30): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#9 /opt/librenms/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(167): App\\Http\\Middleware\\LoadUserPreferences->handle()
#10 /opt/librenms/app/Http/Middleware/VerifyTwoFactor.php(39): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#11 /opt/librenms/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(167): App\\Http\\Middleware\\VerifyTwoFactor->handle()
#12 /opt/librenms/vendor/laravel/framework/src/Illuminate/Routing/Middleware/SubstituteBindings.php(50): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#13 /opt/librenms/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(167): Illuminate\\Routing\\Middleware\\SubstituteBindings->handle()
#14 /opt/librenms/vendor/laravel/framework/src/Illuminate/Auth/Middleware/Authenticate.php(44): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#15 /opt/librenms/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(167): Illuminate\\Auth\\Middleware\\Authenticate->handle()
#16 /opt/librenms/app/Http/Middleware/LegacyExternalAuth.php(42): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#17 /opt/librenms/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(167): App\\Http\\Middleware\\LegacyExternalAuth->handle()
#18 /opt/librenms/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/VerifyCsrfToken.php(78): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#19 /opt/librenms/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(167): Illuminate\\Foundation\\Http\\Middleware\\VerifyCsrfToken->handle()
#20 /opt/librenms/vendor/laravel/framework/src/Illuminate/View/Middleware/ShareErrorsFromSession.php(49): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#21 /opt/librenms/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(167): Illuminate\\View\\Middleware\\ShareErrorsFromSession->handle()
#22 /opt/librenms/vendor/laravel/framework/src/Illuminate/Session/Middleware/StartSession.php(121): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#23 /opt/librenms/vendor/laravel/framework/src/Illuminate/Session/Middleware/StartSession.php(63): Illuminate\\Session\\Middleware\\StartSession->handleStatefulRequest()
#24 /opt/librenms/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(167): Illuminate\\Session\\Middleware\\StartSession->handle()
#25 /opt/librenms/vendor/laravel/framework/src/Illuminate/Cookie/Middleware/AddQueuedCookiesToResponse.php(37): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#26 /opt/librenms/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(167): Illuminate\\Cookie\\Middleware\\AddQueuedCookiesToResponse->handle()
#27 /opt/librenms/vendor/laravel/framework/src/Illuminate/Cookie/Middleware/EncryptCookies.php(67): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#28 /opt/librenms/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(167): Illuminate\\Cookie\\Middleware\\EncryptCookies->handle()
#29 /opt/librenms/app/Http/Middleware/CheckInstalled.php(61): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#30 /opt/librenms/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(167): App\\Http\\Middleware\\CheckInstalled->handle()
#31 /opt/librenms/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(103): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#32 /opt/librenms/vendor/laravel/framework/src/Illuminate/Routing/Router.php(695): Illuminate\\Pipeline\\Pipeline->then()
#33 /opt/librenms/vendor/laravel/framework/src/Illuminate/Routing/Router.php(670): Illuminate\\Routing\\Router->runRouteWithinStack()
#34 /opt/librenms/vendor/laravel/framework/src/Illuminate/Routing/Router.php(636): Illuminate\\Routing\\Router->runRoute()
#35 /opt/librenms/vendor/laravel/framework/src/Illuminate/Routing/Router.php(625): Illuminate\\Routing\\Router->dispatchToRoute()
#36 /opt/librenms/vendor/laravel/framework/src/Illuminate/Foundation/Http/Kernel.php(166): Illuminate\\Routing\\Router->dispatch()
#37 /opt/librenms/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(128): Illuminate\\Foundation\\Http\\Kernel->Illuminate\\Foundation\\Http\\{closure}()
#38 /opt/librenms/vendor/genealabs/laravel-caffeine/src/Http/Middleware/LaravelCaffeineDripMiddleware.php(11): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#39 /opt/librenms/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(167): GeneaLabs\\LaravelCaffeine\\Http\\Middleware\\LaravelCaffeineDripMiddleware->handle()
#40 /opt/librenms/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/TransformsRequest.php(21): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#41 /opt/librenms/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(167): Illuminate\\Foundation\\Http\\Middleware\\TransformsRequest->handle()
#42 /opt/librenms/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/TransformsRequest.php(21): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#43 /opt/librenms/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(167): Illuminate\\Foundation\\Http\\Middleware\\TransformsRequest->handle()
#44 /opt/librenms/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/ValidatePostSize.php(27): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#45 /opt/librenms/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(167): Illuminate\\Foundation\\Http\\Middleware\\ValidatePostSize->handle()
#46 /opt/librenms/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/PreventRequestsDuringMaintenance.php(86): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#47 /opt/librenms/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(167): Illuminate\\Foundation\\Http\\Middleware\\PreventRequestsDuringMaintenance->handle()
#48 /opt/librenms/vendor/fruitcake/laravel-cors/src/HandleCors.php(37): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#49 /opt/librenms/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(167): Fruitcake\\Cors\\HandleCors->handle()
#50 /opt/librenms/vendor/fideloper/proxy/src/TrustProxies.php(57): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#51 /opt/librenms/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(167): Fideloper\\Proxy\\TrustProxies->handle()
#52 /opt/librenms/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(103): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#53 /opt/librenms/vendor/laravel/framework/src/Illuminate/Foundation/Http/Kernel.php(141): Illuminate\\Pipeline\\Pipeline->then()
#54 /opt/librenms/vendor/laravel/framework/src/Illuminate/Foundation/Http/Kernel.php(110): Illuminate\\Foundation\\Http\\Kernel->sendRequestThroughRouter()
#55 /opt/librenms/html/index.php(52): Illuminate\\Foundation\\Http\\Kernel->handle()
#56 {main}
"}```

[paulierco]

I had a “renaming” issue few months ago. It was related to upgrading to php 7.4 and groups/users configured there.
So it was a permission issue. Maybe you can check this through documentation.

[Jellyfrog]

Php 8 is not supported yet.

PHP 8 fixes

[KpuCko]

Great, now I know where is the issue.
Thanks a lot guys!