TypeError: Argument 14 passed to OCA\Music\Controller\ApiController::__construct() must implement

[cdamken]

app
index
browser
Chrome 71.0.3578
browser.name
Chrome
level
error
logger
php
oc-loglevel
3
os.name
Windows 10
release
10.1.0.4
runtime
php 7.0.32
runtime.name
php
transaction
/apps/music/api/album/116082/cover
url
https://cloud.damken.com/index.php/apps/music/api/album/116082/cover

EXCEPTION(most recent call first)
TypeError: Argument 14 passed to OCA\Music\Controller\ApiController::__construct() must implement interface OCP\Files\Folder, null given, called in /var/www/owncloud/apps/music/app/music.php on line 103
#8 music/controller/apicontroller.php(70): __construct
#7 music/app/music.php(103): OCA\Music\App\{closure}
#6 /var/www/owncloud/lib/composer/pimple/pimple/src/Pimple/Container.php(113): offsetGet
#5 /var/www/owncloud/lib/private/AppFramework/Utility/SimpleContainer.php(108): query
#4 /var/www/owncloud/lib/private/AppFramework/App.php(77): main
#3 /var/www/owncloud/lib/private/AppFramework/Routing/RouteActionHandler.php(46): __invoke
#2 /var/www/owncloud/lib/private/Route/Router.php(342): match
#1 /var/www/owncloud/lib/base.php(909): handleRequest
#0 /var/www/owncloud/index.php(54): null

[paulijar]

@cdamken Can you give any more information about this problem? What were you doing when this occurred? Did this happen once or every time you do the same thing?

[paulijar]

I have observed this kind of exception traces when there's no logged in user while some Music app REST endpoint is called. In this case, null is passed to ApiController constructor instead of the user folder reference, and this triggers the TypeError.

In the reported case, the error has occurred while loading an album cover. A possible explanation could be that one browser tab was in the process of loading the albums view while the user logged off from another tab. If this has been the case, then there's probably nothing we could or should do within the Music app.

[paulijar]

With no further information about the steps leading to this exception, there's no way to investigate this further. Closing.