Error log after install

hello,

i would like to try nextcloud, but after i installed it on my virtual machine, my nextcloud log keeps output this:
ImagickException: not authorized `/tmp/magick-

[CODE]
Error index ImagickException: not authorized `/tmp/magick-31081YLG1RcLH8z1b’ @ error/constitute.c/ReadImage/412
/var/www/nextcloud/apps/theming/lib/IconBuilder.php - line 116: Imagick->readimageblob(’<?xml version="…’)
/var/www/nextcloud/apps/theming/lib/IconBuilder.php - line 55: OCA\Theming\IconBuilder->renderAppIcon(‘settings’, 32)
/var/www/nextcloud/apps/theming/lib/Controller/IconController.php - line 130: OCA\Theming\IconBuilder->getFavicon(‘settings’)
[internal function] OCA\Theming\Controller\IconController->getFavicon(‘settings’)
/var/www/nextcloud/lib/private/AppFramework/Http/Dispatcher.php - line 160: call_user_func_array(Array, Array)
/var/www/nextcloud/lib/private/AppFramework/Http/Dispatcher.php - line 90: OC\AppFramework\Http\Dispatcher->executeController(Object(OCA\Theming\Controller\IconController), ‘getFavicon’)
/var/www/nextcloud/lib/private/AppFramework/App.php - line 114: OC\AppFramework\Http\Dispatcher->dispatch(Object(OCA\Theming\Controller\IconController), ‘getFavicon’)
/var/www/nextcloud/lib/private/AppFramework/Routing/RouteActionHandler.php - line 47: OC\AppFramework\App main(‘IconController’, ‘getFavicon’, Object(OC\AppFramework\DependencyInjection\DIContainer), Array)
[internal function] OC\AppFramework\Routing\RouteActionHandler->__invoke(Array)
/var/www/nextcloud/lib/private/Route/Router.php - line 299: call_user_func(Object(OC\AppFramework\Routing\RouteActionHandler), Array)
/var/www/nextcloud/lib/base.php - line 1010: OC\Route\Router->match(’/apps/theming/f…’)
/var/www/nextcloud/index.php - line 40: OC handleRequest()
{main}

[CODE]

i think the problem is with imagemagick but cant solve it.
can you please help me?
thanks

Same problem here. Happend to me after updating from 10.0.2 to 10.0.3, I think.

I would also be happy about help!