[2018-07-06 09:12:25] production.ERROR: Symfony\Component\Debug\Exception\FatalThrowableError: Unsupported operand t[37/1560]
opt/librenms/html/includes/functions.inc.php:861                             
Stack trace:                                                                                                                 
#0 /opt/librenms/html/pages/device/edit/device.inc.php(272): foldersize('/opt/librenms/r...')
#1 /opt/librenms/html/pages/device/edit.inc.php(80): require('/opt/librenms/h...')                                           
#2 /opt/librenms/html/pages/device.inc.php(488): require('/opt/librenms/h...')
#3 /opt/librenms/html/legacy_index.php(219): require('/opt/librenms/h...')                                                   
#4 /opt/librenms/app/Http/Controllers/LegacyController.php(10): include('/opt/librenms/h...')
#5 [internal function]: App\Http\Controllers\LegacyController->index('device/device=1...')                                   
#6 /opt/librenms/vendor/laravel/framework/src/Illuminate/Routing/Controller.php(55): call_user_func_array(Array, Array)
#7 /opt/librenms/vendor/laravel/framework/src/Illuminate/Routing/ControllerDispatcher.php(44): Illuminate\Routing\Controller-
>callAction('index', Array)                        
#8 /opt/librenms/vendor/laravel/framework/src/Illuminate/Routing/Route.php(203): Illuminate\Routing\ControllerDispatcher->dis
patch(Object(Illuminate\Routing\Route), Object(App\Http\Controllers\LegacyController), 'index')
#9 /opt/librenms/vendor/laravel/framework/src/Illuminate/Routing/Route.php(160): Illuminate\Routing\Route->runController()   
#10 /opt/librenms/vendor/laravel/framework/src/Illuminate/Routing/Router.php(572): Illuminate\Routing\Route->run()
#11 /opt/librenms/vendor/laravel/framework/src/Illuminate/Routing/Pipeline.php(30): Illuminate\Routing\Router->Illuminate\Rou
ting\{closure}(Object(Illuminate\Http\Request))    
#12 /opt/librenms/vendor/laravel/framework/src/Illuminate/Routing/Middleware/SubstituteBindings.php(41): Illuminate\Routing\P
ipeline->Illuminate\Routing\{closure}(Object(Illuminate\Http\Request))             
#13 /opt/librenms/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(148): Illuminate\Routing\Middleware\Substitut
eBindings->handle(Object(Illuminate\Http\Request), Object(Closure))             
#14 /opt/librenms/vendor/laravel/framework/src/Illuminate/Routing/Pipeline.php(53): Illuminate\Pipeline\Pipeline->Illuminate\
Pipeline\{closure}(Object(Illuminate\Http\Request))
#15 /opt/librenms/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/VerifyCsrfToken.php(65): Illuminate\Rout
ing\Pipeline->Illuminate\Routing\{closure}(Object(Illuminate\Http\Request))
#16 /opt/librenms/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(148): Illuminate\Foundation\Http\Middleware\V
erifyCsrfToken->handle(Object(Illuminate\Http\Request), Object(Closure))
#17 /opt/librenms/vendor/laravel/framework/src/Illuminate/Routing/Pipeline.php(53): Illuminate\Pipeline\Pipeline->Illuminate$
Pipeline\{closure}(Object(Illuminate\Http\Request))       
#18 /opt/librenms/vendor/laravel/framework/src/Illuminate/Session/Middleware/AuthenticateSession.php(39): Illuminate\Routing$
Pipeline->Illuminate\Routing\{closure}(Object(Illuminate\Http\Request))
#19 /opt/librenms/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(148): Illuminate\Session\Middleware\Authenti$
ateSession->handle(Object(Illuminate\Http\Request), Object(Closure))           
#20 /opt/librenms/vendor/laravel/framework/src/Illuminate/Routing/Pipeline.php(53): Illuminate\Pipeline\Pipeline->Illuminate$
Pipeline\{closure}(Object(Illuminate\Http\Request))                            
#21 /opt/librenms/vendor/laravel/framework/src/Illuminate/View/Middleware/ShareErrorsFromSession.php(49): Illuminate\Routing$
Pipeline->Illuminate\Routing\{closure}(Object(Illuminate\Http\Request))        
#22 /opt/librenms/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(148): Illuminate\View\Middleware\ShareErrorsF
romSession->handle(Object(Illuminate\Http\Request), Object(Closure))
#23 /opt/librenms/vendor/laravel/framework/src/Illuminate/Routing/Pipeline.php(53): Illuminate\Pipeline\Pipeline->Illuminate\
Pipeline\{closure}(Object(Illuminate\Http\Request))
#24 /opt/librenms/vendor/laravel/framework/src/Illuminate/Session/Middleware/StartSession.php(64): Illuminate\Routing\Pipelin
e->Illuminate\Routing\{closure}(Object(Illuminate\Http\Request))
#25 /opt/librenms/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(148): Illuminate\Session\Middleware\StartSess
ion->handle(Object(Illuminate\Http\Request), Object(Closure))
#26 /opt/librenms/vendor/laravel/framework/src/Illuminate/Routing/Pipeline.php(53): Illuminate\Pipeline\Pipeline->Illuminate\
Pipeline\{closure}(Object(Illuminate\Http\Request))
#27 /opt/librenms/vendor/laravel/framework/src/Illuminate/Cookie/Middleware/AddQueuedCookiesToResponse.php(37): Illuminate\Ro
uting\Pipeline->Illuminate\Routing\{closure}(Object(Illuminate\Http\Request))
#28 /opt/librenms/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(148): Illuminate\Cookie\Middleware\AddQueuedC
ookiesToResponse->handle(Object(Illuminate\Http\Request), Object(Closure))
#29 /opt/librenms/vendor/laravel/framework/src/Illuminate/Routing/Pipeline.php(53): Illuminate\Pipeline\Pipeline->Illuminate\
Pipeline\{closure}(Object(Illuminate\Http\Request))
#30 /opt/librenms/vendor/laravel/framework/src/Illuminate/Cookie/Middleware/EncryptCookies.php(59): Illuminate\Routing\Pipeli
ne->Illuminate\Routing\{closure}(Object(Illuminate\Http\Request))
#31 /opt/librenms/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(148): Illuminate\Cookie\Middleware\EncryptCoo
kies->handle(Object(Illuminate\Http\Request), Object(Closure))
#32 /opt/librenms/vendor/laravel/framework/src/Illuminate/Routing/Pipeline.php(53): Illuminate\Pipeline\Pipeline->Illuminate\
Pipeline\{closure}(Object(Illuminate\Http\Request))
#33 /opt/librenms/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(102): Illuminate\Routing\Pipeline->Illuminate
\Routing\{closure}(Object(Illuminate\Http\Request))
#34 /opt/librenms/vendor/laravel/framework/src/Illuminate/Routing/Router.php(574): Illuminate\Pipeline\Pipeline->then(Object(
Closure))
#35 /opt/librenms/vendor/laravel/framework/src/Illuminate/Routing/Router.php(533): Illuminate\Routing\Router->runRouteWithinS
tack(Object(Illuminate\Routing\Route), Object(Illuminate\Http\Request))
#36 /opt/librenms/vendor/laravel/framework/src/Illuminate/Routing/Router.php(511): Illuminate\Routing\Router->dispatchToRoute
(Object(Illuminate\Http\Request))
#37 /opt/librenms/vendor/laravel/framework/src/Illuminate/Foundation/Http/Kernel.php(176): Illuminate\Routing\Router->dispatc
h(Object(Illuminate\Http\Request))
#38 /opt/librenms/vendor/laravel/framework/src/Illuminate/Routing/Pipeline.php(30): Illuminate\Foundation\Http\Kernel->Illumi
nate\Foundation\Http\{closure}(Object(Illuminate\Http\Request))
#39 /opt/librenms/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/TransformsRequest.php(30): Illuminate\Ro
uting\Pipeline->Illuminate\Routing\{closure}(Object(Illuminate\Http\Request))
#40 /opt/librenms/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(148): Illuminate\Foundation\Http\Middleware\T
ransformsRequest->handle(Object(Illuminate\Http\Request), Object(Closure))                                                   
#41 /opt/librenms/vendor/laravel/framework/src/Illuminate/Routing/Pipeline.php(53): Illuminate\Pipeline\Pipeline->Illuminate\
Pipeline\{closure}(Object(Illuminate\Http\Request))                                                                          
#42 /opt/librenms/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/TransformsRequest.php(30): Illuminate\Ro
uting\Pipeline->Illuminate\Routing\{closure}(Object(Illuminate\Http\Request))                                                
#43 /opt/librenms/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(148): Illuminate\Foundation\Http\Middleware\T
ransformsRequest->handle(Object(Illuminate\Http\Request), Object(Closure))                                                   
#44 /opt/librenms/vendor/laravel/framework/src/Illuminate/Routing/Pipeline.php(53): Illuminate\Pipeline\Pipeline->Illuminate\
Pipeline\{closure}(Object(Illuminate\Http\Request))                                                                          
#45 /opt/librenms/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/ValidatePostSize.php(27): Illuminate\Rou
ting\Pipeline->Illuminate\Routing\{closure}(Object(Illuminate\Http\Request))                                                 
#46 /opt/librenms/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(148): Illuminate\Foundation\Http\Middleware\V
alidatePostSize->handle(Object(Illuminate\Http\Request), Object(Closure))                                                    
#47 /opt/librenms/vendor/laravel/framework/src/Illuminate/Routing/Pipeline.php(53): Illuminate\Pipeline\Pipeline->Illuminate\
Pipeline\{closure}(Object(Illuminate\Http\Request))                                                                          
#48 /opt/librenms/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/CheckForMaintenanceMode.php(46): Illumin
ate\Routing\Pipeline->Illuminate\Routing\{closure}(Object(Illuminate\Http\Request))                                          
#49 /opt/librenms/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(148): Illuminate\Foundation\Http\Middleware\C
heckForMaintenanceMode->handle(Object(Illuminate\Http\Request), Object(Closure))                                             
#50 /opt/librenms/vendor/laravel/framework/src/Illuminate/Routing/Pipeline.php(53): Illuminate\Pipeline\Pipeline->Illuminate\
Pipeline\{closure}(Object(Illuminate\Http\Request))                                                                          
#51 /opt/librenms/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(102): Illuminate\Routing\Pipeline->Illuminate
\Routing\{closure}(Object(Illuminate\Http\Request))                                                                          
#52 /opt/librenms/vendor/laravel/framework/src/Illuminate/Foundation/Http/Kernel.php(151): Illuminate\Pipeline\Pipeline->then
(Object(Closure))                                                                                                            
#53 /opt/librenms/vendor/laravel/framework/src/Illuminate/Foundation/Http/Kernel.php(116): Illuminate\Foundation\Http\Kernel-
>sendRequestThroughRouter(Object(Illuminate\Http\Request))                                                                   
#54 /opt/librenms/html/index.php(53): Illuminate\Foundation\Http\Kernel->handle(Object(Illuminate\Http\Request))
#55 {main}