Crash when syncing folder on Android

[MaxG87]

Steps to reproduce

1. Create and populate folder on second device, e.g. PC
2. Switch to Android device with NextCloud Dev.
3. Try to synchronise whole folder.

Expected behaviour

Folder should sync.

Environment data

Device model:
Pocophone F1

Logs

Nextcloud log (data/nextcloud.log)

************ CAUSE OF ERROR ************

java.lang.RuntimeException: Unable to start service com.owncloud.android.services.OperationsService@571ea0b with Intent { act=SYNC_FOLDER cmp=com.nextcloud.android.beta/com.owncloud.android.services.OperationsService (has extras) }: java.lang.ClassCastException: com.nextcloud.client.account.RegisteredUser cannot be cast to android.accounts.Account
	at android.app.ActivityThread.handleServiceArgs(ActivityThread.java:4142)
	at android.app.ActivityThread.access$1900(ActivityThread.java:220)
	at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1915)
	at android.os.Handler.dispatchMessage(Handler.java:107)
	at android.os.Looper.loop(Looper.java:224)
	at android.app.ActivityThread.main(ActivityThread.java:7520)
	at java.lang.reflect.Method.invoke(Native Method)
	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:539)
	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:950)
Caused by: java.lang.ClassCastException: com.nextcloud.client.account.RegisteredUser cannot be cast to android.accounts.Account
	at com.owncloud.android.services.OperationsService.onStartCommand(OperationsService.java:196)
	at android.app.ActivityThread.handleServiceArgs(ActivityThread.java:4121)
	... 8 more

************ APP INFORMATION ************
ID: com.nextcloud.android.beta
Version: 20200423
Build flavor: versionDev

************ DEVICE INFORMATION ************
Brand: Xiaomi
Device: beryllium
Model: POCOPHONE F1
Id: QKQ1.190828.002
Product: beryllium

************ FIRMWARE ************
SDK: 29
Release: 10
Incremental: V11.0.4.0.QEJMIXM```

[ezaquarii]

@tobiasKaminsky I believe this has been fixed in dev?

[AndyScherzinger]

I believe so too, please update your client, version April 24th is very old.

[AndyScherzinger]

Already fixed here: #6046