Internal Server Error after update ubuntu

hello guys
today after install ubuntu 18.04.3 to last version update apach2 and mysql server…
nextcloud login page have error :

Internal Server Error
Remote Address: 192.168.2.244
Request ID: xfN2ENjsQ83MmJCrGrFu
Type: OCP\Files\NotPermittedException
Code: 0
Message:
File: /var/www/nextcloud/lib/private/Files/Node/File.php
Line: 126

Trace
#0 /var/www/nextcloud/lib/private/Files/SimpleFS/SimpleFile.php(128): OC\Files\Node\File->delete()
#1 /var/www/nextcloud/lib/private/Files/SimpleFS/SimpleFile.php(91): OC\Files\SimpleFS\SimpleFile->checkFile()
#2 /var/www/nextcloud/lib/private/Template/SCSSCacher.php(243): OC\Files\SimpleFS\SimpleFile->getContent()
#3 /var/www/nextcloud/lib/private/Template/SCSSCacher.php(148): OC\Template\SCSSCacher->isCached(‘e211-3227-css-v…’, ‘core’)
#4 /var/www/nextcloud/lib/private/Template/CSSResourceLocator.php(109): OC\Template\SCSSCacher->process(’/var/www/nextcl…’, ‘core/css/css-va…’, ‘core’)
#5 /var/www/nextcloud/lib/private/Template/CSSResourceLocator.php(61): OC\Template\CSSResourceLocator->cacheAndAppendScssIfExist(’/var/www/nextcl…’, ‘core/css/css-va…’)
#6 /var/www/nextcloud/lib/private/Template/ResourceLocator.php(78): OC\Template\CSSResourceLocator->doFind(‘css/css-variabl…’)
#7 /var/www/nextcloud/lib/private/TemplateLayout.php(296): OC\Template\ResourceLocator->find(Array)
#8 /var/www/nextcloud/lib/private/TemplateLayout.php(201): OC\TemplateLayout::findStylesheetFiles(Array)
#9 /var/www/nextcloud/lib/private/legacy/template.php(183): OC\TemplateLayout->__construct(‘user’, ‘files’)
#10 /var/www/nextcloud/lib/public/AppFramework/Http/TemplateResponse.php(160): OC_Template->fetchPage(Array)
#11 /var/www/nextcloud/lib/private/AppFramework/Http/Dispatcher.php(119): OCP\AppFramework\Http\TemplateResponse->render()
#12 /var/www/nextcloud/lib/private/AppFramework/App.php(126): OC\AppFramework\Http\Dispatcher->dispatch(Object(OCA\Files\Controller\ViewController), ‘index’)
#13 /var/www/nextcloud/lib/private/AppFramework/Routing/RouteActionHandler.php(47): OC\AppFramework\App::main(‘ViewController’, ‘index’, Object(OC\AppFramework\DependencyInjection\DIContainer), Array)
#14 [internal function]: OC\AppFramework\Routing\RouteActionHandler->__invoke(Array)
#15 /var/www/nextcloud/lib/private/Route/Router.php(297): call_user_func(Object(OC\AppFramework\Routing\RouteActionHandler), Array)
#16 /var/www/nextcloud/lib/base.php(975): OC\Route\Router->match(’/apps/files/’)
#17 /var/www/nextcloud/index.php(42): OC::handleRequest()
#18 {main}

how to resolve this error
Thank you…

Hello togehter,

i have the same problem. And i think mysql have a problem after updateing. anyone a idea to resolve this error