Timetable empty, Rooms/Classes/Teachers all greyed-out

Steps to Reproduce

Login to "Merian-Schule Berlin" (works both with key+"Passwort direkt benutzen" or with password without that option) via nessa.webuntis.com Look into Timetable, Rooms, Teachers etc.

Expected Result

Timetables to be shown, Filters/Rooms etc. clickable

Actual Result

Timetable is empty ("Letzte Aktualisierung: nie") even after refresh

Teachers and rooms tabs are shown, but greyed out and not selectable

Logcat says:

09-11 08:29:39.082 18280 18280 D WeekView: Loading items for 2024-09-09
09-11 08:29:39.086 18280 18280 D TimetableLoaderDebug: target TimetableLoaderTarget(startDate=2024-09-09, endDate=2024-09-14, id=983, type=LEGAL_GUARDIAN) (requestId 7): cached file missing
09-11 08:29:39.091 18280 19251 I System.out: checkUrl: https://nessa.webuntis.com/WebUntis/jsonrpc_intern.do?school=Merian-Schule+Berlin&v=a5.2.3
09-11 08:29:39.092 18280 18296 I System.out: checkUrl: https://nessa.webuntis.com/WebUntis/jsonrpc_intern.do?school=Merian-Schule+Berlin&v=a5.2.3
09-11 08:29:39.093 18280 19251 W System  : ClassLoader referenced unknown path: system/framework/mediatek-cta.jar
09-11 08:29:39.096 18280 19251 I System.out: e:java.lang.ClassNotFoundException: com.mediatek.cta.CtaHttp
09-11 08:29:39.097 18280 18296 W System  : ClassLoader referenced unknown path: system/framework/mediatek-cta.jar
09-11 08:29:39.103 18280 18296 I System.out: e:java.lang.ClassNotFoundException: com.mediatek.cta.CtaHttp
09-11 08:29:39.456 18280 19251 W System  : ClassLoader referenced unknown path: system/framework/mediatek-cta.jar
09-11 08:29:39.457 18280 19251 I System.out: e:java.lang.ClassNotFoundException: com.mediatek.cta.CtaHttp
09-11 08:29:39.460 18280 18296 W System  : ClassLoader referenced unknown path: system/framework/mediatek-cta.jar
09-11 08:29:39.461 18280 18296 I System.out: e:java.lang.ClassNotFoundException: com.mediatek.cta.CtaHttp
09-11 08:29:39.563 18280 19251 I System.out: Check isMmsSendPdu
09-11 08:29:39.564 18280 19251 W System  : ClassLoader referenced unknown path: system/framework/mediatek-cta.jar
09-11 08:29:39.567 18280 18296 I System.out: Check isMmsSendPdu
09-11 08:29:39.567 18280 18296 W System  : ClassLoader referenced unknown path: system/framework/mediatek-cta.jar
09-11 08:29:39.569 18280 18296 I System.out: [OkHttp] sendRequest<<
09-11 08:29:39.569 18280 19251 I System.out: [OkHttp] sendRequest<<
09-11 08:29:39.682 18280 18280 D TimetableLoaderDebug: target TimetableLoaderTarget(startDate=2024-09-09, endDate=2024-09-14, id=983, type=LEGAL_GUARDIAN) (requestId 7): network request failed at Untis API level
09-11 08:29:39.682 18280 18280 D TimetableLoaderDebug: s9.h: invalid element type: 12
09-11 08:29:39.682 18280 18280 D TimetableLoaderDebug:  at s9.n.a(SourceFile:574)
09-11 08:29:39.682 18280 18280 D TimetableLoaderDebug:  at s9.m.j(SourceFile:14)
09-11 08:29:39.682 18280 18280 D TimetableLoaderDebug:  at za.a.k(SourceFile:9)
09-11 08:29:39.682 18280 18280 D TimetableLoaderDebug:  at kotlinx.coroutines.i0.run(SourceFile:111)
09-11 08:29:39.682 18280 18280 D TimetableLoaderDebug:  at androidx.compose.ui.platform.u0.i0(SourceFile:7)
09-11 08:29:39.682 18280 18280 D TimetableLoaderDebug:  at androidx.compose.ui.platform.t0.run(SourceFile:3)
09-11 08:29:39.682 18280 18280 D TimetableLoaderDebug:  at android.os.Handler.handleCallback(Handler.java:790)
09-11 08:29:39.682 18280 18280 D TimetableLoaderDebug:  at android.os.Handler.dispatchMessage(Handler.java:99)
09-11 08:29:39.682 18280 18280 D TimetableLoaderDebug:  at android.os.Looper.loop(Looper.java:164)
09-11 08:29:39.682 18280 18280 D TimetableLoaderDebug:  at android.app.ActivityThread.main(ActivityThread.java:6548)
09-11 08:29:39.682 18280 18280 D TimetableLoaderDebug:  at java.lang.reflect.Method.invoke(Native Method)
09-11 08:29:39.682 18280 18280 D TimetableLoaderDebug:  at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438)
09-11 08:29:39.682 18280 18280 D TimetableLoaderDebug:  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:857)
09-11 08:29:39.683 18280 18280 D WeekView: All items received for 2024-09-09

Android Version

Android 8.1.0

BetterUntis Version

4.1.0-beta01 (28334728)

Installation Source

F-Droid

Additional information

"OpenUntis" and "Stundenplan" are also failing (empty timetables). WebUntis via Browser works.

SapuSeven / BetterUntis