Can not use custom delegate

[karo-dc]

My Environment

• Plugin version: 1.9.0-beta.4
• Platform: iOS
• OS version: 12
• Device manufacturer / model: ios 10+
• Nativescript version (tns info): 5.0.3
• Plugin config

Expected Behavior

Custom delegate should have worked properly

Actual Behavior

It did not work anyway, although I did the setup as shown in readme

Steps to Reproduce

1. Created custom delegate, as shown in readme.
2. app.ios.delegate = CustomAppDelegate
3. while running app I get error:
   tns-error-delegate.txt

Context

Build for iOS.

Debug logs

tns-error-delegate.txt