App crash when opining the app

[laurenz0071]

Describe the bug
When I open the Schildi Chat App the app crashes shortly after showing the overview of the conversation list which shows no conversations due to a prior forcefully aborted reindexing.

To Reproduce
Steps to reproduce the behavior:

1. In preferences where one can also clear the cache there is also an option to reindex the chats. I first cleared the cache, then I started the reindexing (of the chats/chatrooms) and during this proceidure it got stuck (or needed more time than I had) so I closed the app.
2. When reopening the app it crashed. It's not working any more at all.
3. Expected behaviour: It should reopen and let me restart the reindexing so that I can use the app again for chatting.

Smartphone (please complete the following information):

• Device: [Google Pixel 8Pro]
• OS: [Android 16]

Additional context

de.spiritcroc.riotx
versionCode 40101382

targetSdk 35
minSdk 21

• App version: [1.6.44.sc88]
• Store: [F-Droid]
• Homeserver: [matrix.org]
• Related labs settings: [No Labs settings enabled]
• Logs have been submitted using the app's built-in bug report (/"rageshake") no]

Error in SchildiChat 993e6f452da1.txt

"```
type: crash
osVersion: google/husky/husky:16/BP2A.250805.005/2025081400:user/release-keys
package: de.spiritcroc.riotx:40101382, targetSdk 35
process: de.spiritcroc.riotx
processUptime: 2441 + 287 ms
installer: org.fdroid.fdroid

ServerError(error=MatrixError(code=M_UNKNOWN, message=Server is unavailable, consentUri=null, limitType=null, adminUri=null, retryAfterMillis=null, isSoftLogout=null, newLookupPepper=null, session=null, completedStages=null, flows=null, params=null), httpCode=429)
at org.matrix.android.sdk.internal.network.RetrofitExtensionsKt.toFailure(SourceFile:28)
at org.matrix.android.sdk.internal.network.RetrofitExtensionsKt.toFailure(SourceFile:3)
at org.matrix.android.sdk.internal.session.user.accountdata.DefaultUpdateUserAccountDataTask.execute(SourceFile:6)
at org.matrix.android.sdk.internal.session.user.accountdata.DefaultUpdateUserAccountDataTask$execute$1.invokeSuspend(Unknown Source:12)
at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(SourceFile:9)
at kotlinx.coroutines.DispatchedTask.run(SourceFile:108)
at kotlinx.coroutines.internal.LimitedDispatcher$Worker.run(SourceFile:4)
at kotlinx.coroutines.scheduling.TaskImpl.run(SourceFile:3)
at kotlinx.coroutines.scheduling.CoroutineScheduler.runSafely(SourceFile:1)
at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.executeTask(SourceFile:34)
at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.runWorker(SourceFile:29)
at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.run(SourceFile:1)
Suppressed: kotlinx.coroutines.internal.DiagnosticCoroutineContextException: [StandaloneCoroutine{Cancelling}@eb7782b, Dispatchers.Main.immediate]
Caused by: java.lang.RuntimeException: MatrixError(code=M_UNKNOWN, message=Server is unavailable, consentUri=null, limitType=null, adminUri=null, retryAfterMillis=null, isSoftLogout=null, newLookupPepper=null, session=null, completedStages=null, flows=null, params=null)
... 12 more

"