Error "No Network Connection" on android 11 while uploading multiple files

### Please agree to the following

- [X] I have searched [existing issues](https://github.com/cryptomator/android/issues?q=) for duplicates
- [X] I agree to follow this project's [Code of Conduct](https://github.com/cryptomator/android/blob/develop/.github/CODE_OF_CONDUCT.md)

### Summary

I was trying to upload multiple .jpg image to my S3 Vault. Then it gave me error "No Network Connection" but when I try to upload a single file it uploads successfully. I am confirmed there is not issue with network.

### System Setup

```markdown
- Android: 11
- Cryptomator: 1.6.1
```

### Cloud Type

S3

### Steps to Reproduce

1. Unlock a vault
2. Click on upload file option
3. Select multiple files and wait

### Expected Behavior

Cryptomator should upload file and after uploading the file it should update the available file in folder.

### Actual Behavior

Cryptomator will show a toast "No Network Connection".

### Reproducibility

Intermittent

### Relevant Log Output

```shell
D 20211028221002.916 ExceptionHandler Unexpected error
org.cryptomator.domain.exception.NetworkConnectionException: org.cryptomator.domain.exception.FatalBackendException: java.net.SocketException: Connection reset
at org.cryptomator.data.cloud.s3.S3CloudContentRepository.throwConnectionErrorIfRequired(S3CloudContentRepository.kt:47)
at org.cryptomator.data.cloud.s3.S3CloudContentRepository.throwWrappedIfRequired(S3CloudContentRepository.kt:30)
at org.cryptomator.data.cloud.InterceptingCloudContentRepository.write(InterceptingCloudContentRepository.kt:160)
at org.cryptomator.data.repository.DispatchingCloudContentRepository.write(DispatchingCloudContentRepository.kt:149)
at org.cryptomator.data.cloud.crypto.CryptoImplDecorator.writeFromTmpFile(CryptoImplDecorator.kt:257)
at org.cryptomator.data.cloud.crypto.CryptoImplDecorator.writeShortNameFile(CryptoImplDecorator.kt:443)
at org.cryptomator.data.cloud.crypto.CryptoImplVaultFormat7.write(CryptoImplVaultFormat7.kt:439)
at org.cryptomator.data.cloud.crypto.CryptoCloudContentRepository.write(CryptoCloudContentRepository.kt:90)
at org.cryptomator.data.cloud.crypto.CryptoCloudContentRepository.write(CryptoCloudContentRepository.kt:21)
at org.cryptomator.data.repository.DispatchingCloudContentRepository.write(DispatchingCloudContentRepository.kt:149)
at org.cryptomator.domain.usecases.cloud.UploadFiles.writeCloudFile(UploadFiles.java:117)
at org.cryptomator.domain.usecases.cloud.UploadFiles.upload(UploadFiles.java:94)
at org.cryptomator.domain.usecases.cloud.UploadFiles.upload(UploadFiles.java:82)
at org.cryptomator.domain.usecases.cloud.UploadFiles.upload(UploadFiles.java:74)
at org.cryptomator.domain.usecases.cloud.UploadFiles.execute(UploadFiles.java:61)
at org.cryptomator.domain.usecases.cloud.UploadFilesUseCase$Launcher$2.subscribe(UploadFilesUseCase.java:119)
at io.reactivex.internal.operators.flowable.FlowableFromPublisher.subscribeActual(FlowableFromPublisher.java:29)
at io.reactivex.Flowable.subscribe(Flowable.java:14935)
at io.reactivex.Flowable.subscribe(Flowable.java:14882)
at io.reactivex.internal.operators.flowable.FlowableSubscribeOn$SubscribeOnSubscriber.run(FlowableSubscribeOn.java:82)
at io.reactivex.internal.schedulers.ExecutorScheduler$ExecutorWorker$BooleanRunnable.run(ExecutorScheduler.java:288)
at io.reactivex.internal.schedulers.ExecutorScheduler$ExecutorWorker.run(ExecutorScheduler.java:253)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
at java.lang.Thread.run(Thread.java:923)
Caused by: org.cryptomator.domain.exception.FatalBackendException: java.net.SocketException: Connection reset
at org.cryptomator.data.cloud.s3.S3CloudContentRepository$Intercepted.write(S3CloudContentRepository.kt:143)
at org.cryptomator.data.cloud.s3.S3CloudContentRepository$Intercepted.write(S3CloudContentRepository.kt:62)
at org.cryptomator.data.cloud.InterceptingCloudContentRepository.write(InterceptingCloudContentRepository.kt:155)
... 22 more
Caused by: java.net.SocketException: Connection reset
at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:121)
at java.net.SocketOutputStream.write(SocketOutputStream.java:161)
at com.android.org.conscrypt.ConscryptEngineSocket$SSLOutputStream.writeToSocket(ConscryptEngineSocket.java:715)
at com.android.org.conscrypt.ConscryptEngineSocket$SSLOutputStream.writeInternal(ConscryptEngineSocket.java:689)
at com.android.org.conscrypt.ConscryptEngineSocket$SSLOutputStream.write(ConscryptEngineSocket.java:652)
at okio.OutputStreamSink.write(JvmOkio.kt:53)
at okio.AsyncTimeout$sink$1.write(AsyncTimeout.kt:103)
at okio.RealBufferedSink.emitCompleteSegments(RealBufferedSink.kt:255)
at okio.RealBufferedSink.write(RealBufferedSink.kt:146)
at okhttp3.internal.http1.Http1ExchangeCodec$KnownLengthSink.write(Http1ExchangeCodec.kt:271)
at okio.ForwardingSink.write(ForwardingSink.kt:29)
at okhttp3.internal.connection.Exchange$RequestBodySink.write(Exchange.kt:218)
at okio.RealBufferedSink.emitCompleteSegments(RealBufferedSink.kt:255)
at okio.RealBufferedSink.write(RealBufferedSink.kt:203)
at io.minio.HttpRequestBody.writeTo(HttpRequestBody.java:57)
at okhttp3.internal.http.CallServerInterceptor.intercept(CallServerInterceptor.kt:59)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:109)
at okhttp3.internal.connection.ConnectInterceptor.intercept(ConnectInterceptor.kt:34)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:109)
at okhttp3.internal.cache.CacheInterceptor.intercept(CacheInterceptor.kt:95)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:109)
at okhttp3.internal.http.BridgeInterceptor.intercept(BridgeInterceptor.kt:83)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:109)
at okhttp3.internal.http.RetryAndFollowUpInterceptor.intercept(RetryAndFollowUpInterceptor.kt:76)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:109)
at org.cryptomator.data.cloud.okhttplogging.HttpLoggingInterceptor.getResponseLoggingExceptions(HttpLoggingInterceptor.kt:51)
at org.cryptomator.data.cloud.okhttplogging.HttpLoggingInterceptor.getAndLogResponse(HttpLoggingInterceptor.kt:42)
at org.cryptomator.data.cloud.okhttplogging.HttpLoggingInterceptor.proceedWithLogging(HttpLoggingInterceptor.kt:28)
at org.cryptomator.data.cloud.okhttplogging.HttpLoggingInterceptor.intercept(HttpLoggingInterceptor.kt:18)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:109)
at okhttp3.internal.connection.RealCall.getResponseWithInterceptorChain$okhttp(RealCall.kt:201)
at okhttp3.internal.connection.RealCall.execute(RealCall.kt:154)
at io.minio.S3Base.execute(S3Base.java:532)
at io.minio.S3Base.uploadPart(S3Base.java:2159)
at io.minio.S3Base.putObject(S3Base.java:1175)
at io.minio.MinioClient.putObject(MinioClient.java:1666)
at org.cryptomator.data.cloud.s3.S3Impl.write(S3Impl.kt:247)
at org.cryptomator.data.cloud.s3.S3CloudContentRepository$Intercepted.write(S3CloudContentRepository.kt:141)
... 24 more

ErrorCode: 10UH:OG5O
D 20211028221002.919 ExceptionHandler org.cryptomator.domain.exception.NetworkConnectionException: org.cryptomator.domain.exception.FatalBackendException: java.net.SocketException: Connection reset
at org.cryptomator.data.cloud.s3.S3CloudContentRepository.throwConnectionErrorIfRequired(S3CloudContentRepository.kt:47)
at org.cryptomator.data.cloud.s3.S3CloudContentRepository.throwWrappedIfRequired(S3CloudContentRepository.kt:30)
at org.cryptomator.data.cloud.InterceptingCloudContentRepository.write(InterceptingCloudContentRepository.kt:160)
at org.cryptomator.data.repository.DispatchingCloudContentRepository.write(DispatchingCloudContentRepository.kt:149)
at org.cryptomator.data.cloud.crypto.CryptoImplDecorator.writeFromTmpFile(CryptoImplDecorator.kt:257)
at org.cryptomator.data.cloud.crypto.CryptoImplDecorator.writeShortNameFile(CryptoImplDecorator.kt:443)
at org.cryptomator.data.cloud.crypto.CryptoImplVaultFormat7.write(CryptoImplVaultFormat7.kt:439)
at org.cryptomator.data.cloud.crypto.CryptoCloudContentRepository.write(CryptoCloudContentRepository.kt:90)
at org.cryptomator.data.cloud.crypto.CryptoCloudContentRepository.write(CryptoCloudContentRepository.kt:21)
at org.cryptomator.data.repository.DispatchingCloudContentRepository.write(DispatchingCloudContentRepository.kt:149)
at org.cryptomator.domain.usecases.cloud.UploadFiles.writeCloudFile(UploadFiles.java:117)
at org.cryptomator.domain.usecases.cloud.UploadFiles.upload(UploadFiles.java:94)
at org.cryptomator.domain.usecases.cloud.UploadFiles.upload(UploadFiles.java:82)
at org.cryptomator.domain.usecases.cloud.UploadFiles.upload(UploadFiles.java:74)
at org.cryptomator.domain.usecases.cloud.UploadFiles.execute(UploadFiles.java:61)
at org.cryptomator.domain.usecases.cloud.UploadFilesUseCase$Launcher$2.subscribe(UploadFilesUseCase.java:119)
at io.reactivex.internal.operators.flowable.FlowableFromPublisher.subscribeActual(FlowableFromPublisher.java:29)
at io.reactivex.Flowable.subscribe(Flowable.java:14935)
at io.reactivex.Flowable.subscribe(Flowable.java:14882)
at io.reactivex.internal.operators.flowable.FlowableSubscribeOn$SubscribeOnSubscriber.run(FlowableSubscribeOn.java:82)
at io.reactivex.internal.schedulers.ExecutorScheduler$ExecutorWorker$BooleanRunnable.run(ExecutorScheduler.java:288)
at io.reactivex.internal.schedulers.ExecutorScheduler$ExecutorWorker.run(ExecutorScheduler.java:253)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
at java.lang.Thread.run(Thread.java:923)
Caused by: org.cryptomator.domain.exception.FatalBackendException: java.net.SocketException: Connection reset
at org.cryptomator.data.cloud.s3.S3CloudContentRepository$Intercepted.write(S3CloudContentRepository.kt:143)
at org.cryptomator.data.cloud.s3.S3CloudContentRepository$Intercepted.write(S3CloudContentRepository.kt:62)
at org.cryptomator.data.cloud.InterceptingCloudContentRepository.write(InterceptingCloudContentRepository.kt:155)
... 22 more
Caused by: java.net.SocketException: Connection reset
at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:121)
at java.net.SocketOutputStream.write(SocketOutputStream.java:161)
at com.android.org.conscrypt.ConscryptEngineSocket$SSLOutputStream.writeToSocket(ConscryptEngineSocket.java:715)
at com.android.org.conscrypt.ConscryptEngineSocket$SSLOutputStream.writeInternal(ConscryptEngineSocket.java:689)
at com.android.org.conscrypt.ConscryptEngineSocket$SSLOutputStream.write(ConscryptEngineSocket.java:652)
at okio.OutputStreamSink.write(JvmOkio.kt:53)
at okio.AsyncTimeout$sink$1.write(AsyncTimeout.kt:103)
at okio.RealBufferedSink.emitCompleteSegments(RealBufferedSink.kt:255)
at okio.RealBufferedSink.write(RealBufferedSink.kt:146)
at okhttp3.internal.http1.Http1ExchangeCodec$KnownLengthSink.write(Http1ExchangeCodec.kt:271)
at okio.ForwardingSink.write(ForwardingSink.kt:29)
at okhttp3.internal.connection.Exchange$RequestBodySink.write(Exchange.kt:218)
at okio.RealBufferedSink.emitCompleteSegments(RealBufferedSink.kt:255)
at okio.RealBufferedSink.write(RealBufferedSink.kt:203)
at io.minio.HttpRequestBody.writeTo(HttpRequestBody.java:57)
at okhttp3.internal.http.CallServerInterceptor.intercept(CallServerInterceptor.kt:59)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:109)
at okhttp3.internal.connection.ConnectInterceptor.intercept(ConnectInterceptor.kt:34)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:109)
at okhttp3.internal.cache.CacheInterceptor.intercept(CacheInterceptor.kt:95)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:109)
at okhttp3.internal.http.BridgeInterceptor.intercept(BridgeInterceptor.kt:83)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:109)
at okhttp3.internal.http.RetryAndFollowUpInterceptor.intercept(RetryAndFollowUpInterceptor.kt:76)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:109)
at org.cryptomator.data.cloud.okhttplogging.HttpLoggingInterceptor.getResponseLoggingExceptions(HttpLoggingInterceptor.kt:51)
at org.cryptomator.data.cloud.okhttplogging.HttpLoggingInterceptor.getAndLogResponse(HttpLoggingInterceptor.kt:42)
at org.cryptomator.data.cloud.okhttplogging.HttpLoggingInterceptor.proceedWithLogging(HttpLoggingInterceptor.kt:28)
at org.cryptomator.data.cloud.okhttplogging.HttpLoggingInterceptor.intercept(HttpLoggingInterceptor.kt:18)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:109)
at okhttp3.internal.connection.RealCall.getResponseWithInterceptorChain$okhttp(RealCall.kt:201)
at okhttp3.internal.connection.RealCall.execute(RealCall.kt:154)
at io.minio.S3Base.execute(S3Base.java:532)
at io.minio.S3Base.uploadPart(S3Base.java:2159)
at io.minio.S3Base.putObject(S3Base.java:1175)
at io.minio.MinioClient.putObject(MinioClient.java:1666)
at org.cryptomator.data.cloud.s3.S3Impl.write(S3Impl.kt:247)
at org.cryptomator.data.cloud.s3.S3CloudContentRepository$Intercepted.write(S3CloudContentRepository.kt:141)
... 24 more

ErrorCode: 10UH:OG5O
W 20211028221002.926 Message No network connection
```

### Anything else?

I am using Backblaze.
Automatic photo upload is active.
Cache size is 100 MB
Keep vaults unlocked while editing files : ON