XCode 11 GM - app crashes after startupon device Terminated due to signal 9

I have a legacy app that uses Objective-C ( with manual memory management). Using the new XCode 11 (gold master) the app crashes after building and starting to run on the device/simulator. I noticed that this only happens to devices/simulators with iOS 12. The crash happens on object creation:

+ (id)cr {
    CRJSONParser* p = [[CRJSONParser new] autorelease];// crash here
    return p;
}

There is no specific crash message only:

Message from debugger: Terminated due to signal 9

Any suggestions on how to fix this issue?

from XCode 11 GM - app crashes after startupon device Terminated due to signal 9