Nextcloud App crashes on android

[rainer042]

Steps to reproduce

1. Start downloding a file from your nextcloud. App crashes.
2. Possibly an invalid cert could cause this problem. Browsing the directory hierarchies does work but downloading a file does not.

Environment data

Android version:9

Device model: S8

Stock or customized system:

Nextcloud app version:
3.10

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

javax.net.ssl.SSLPeerUnverifiedException: Hostname owncloud.fritz.box not verified:
certificate: sha256/aMkcz+3MsJPJhiMiYOf1199DcZNSj9Ava/m3JRoqVmQ=
DN: CN=.......
subjectAltNames:
at okhttp3.internal.connection.RealConnection.connectTls(RealConnection.java:334)
at okhttp3.internal.connection.RealConnection.establishProtocol(RealConnection.java:284)
at okhttp3.internal.connection.RealConnection.connect(RealConnection.java:169)
at okhttp3.internal.connection.StreamAllocation.findConnection(StreamAllocation.java:258)
at okhttp3.internal.connection.StreamAllocation.findHealthyConnection(StreamAllocation.java:135)
at okhttp3.internal.connection.StreamAllocation.newStream(StreamAllocation.java:114)
at okhttp3.internal.connection.ConnectInterceptor.intercept(ConnectInterceptor.java:42)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
at okhttp3.internal.cache.CacheInterceptor.intercept(CacheInterceptor.java:93)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
at okhttp3.internal.http.BridgeInterceptor.intercept(BridgeInterceptor.java:93)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
at okhttp3.internal.http.RetryAndFollowUpInterceptor.intercept(RetryAndFollowUpInterceptor.java:127)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
at okhttp3.RealCall.getResponseWithInterceptorChain(RealCall.java:257)
at okhttp3.RealCall.execute(RealCall.java:93)
at com.nextcloud.common.OkHttpMethodBase.execute(OkHttpMethodBase.kt:126)
at com.nextcloud.common.NextcloudClient.execute(NextcloudClient.kt:67)
at com.owncloud.android.lib.resources.activities.GetActivitiesRemoteOperation.run(GetActivitiesRemoteOperation.java:131)
at com.nextcloud.common.NextcloudClient.execute(NextcloudClient.kt:63)
at com.owncloud.android.ui.fragment.FileDetailActivitiesFragment.lambda$fetchAndSetData$5$FileDetailActivitiesFragment(FileDetailActivitiesFragment.java:331)
at com.owncloud.android.ui.fragment.-$$Lambda$FileDetailActivitiesFragment$N7POe6TZvoGcuV2qP-niPxY_7t4.run(Unknown Source:12)
at java.lang.Thread.run(Thread.java:764)

************ APP INFORMATION ************
ID: com.nextcloud.client
Version: 30100090
Build flavor: gplay

************ DEVICE INFORMATION ************
Brand: samsung
Device: dreamlte
Model: SM-G950F
Id: PPR1.180610.011
Product: dreamltexx

************ FIRMWARE ************
SDK: 28
Release: 9
Incremental: G950FXXS6DSL2

[DragonQ]

I have also had this error when trying to view directory details.