Alamofire.Session random crashes on iOS 15.0

[stefanoschrs]

Describe the bug

When trying to run a fresh clone of the verifier, I sometimes get random crashes on the https://github.com/eu-digital-green-certificates/dgca-app-core-ios/blob/main/Sources/Services/ContextConnection.swift#L37 at the alamofireSession creation and sometimes it passes that point and gets stuck on the splash screen. On the iOS 14.x it works as expected.

#       alamofireSessions[url] = Alamofire.Session(serverTrustManager: trust)
Thread 6: EXC_BAD_ACCESS (code=1, address=0x10)

#     let session = alamofireSessions[url] ?? AF
Thread 8: "-[__NSCFNumber count]: unrecognized selector sent to instance 0x8000000000000000"

Expected behaviour

For the Verifier to work

Steps to reproduce the issue

1. Clone dgca-app-core-ios, dgc-certlogic-ios, dgca-verifier-app-ios
2. Run dgca-verifier-app-ios
3. Re-run dgca-verifier-app-ios

Technical details

• MacOS: 11.6
• XCode: 13.1
• Device: iPhone 8 - iOS 15.0

Possible Fix

This could be helpful Alamofire/Alamofire#3122