[AC-6245] iOS: Firebase Cloud Messaging Token Fetching Error (embedded.mobileprovision couldn't be opened)

The problem is that when I test the app by deploying directly to my device I was able to get the firebase cloud messaging token but when I test it in the TestFlight I don't see the fcmToken and got this error:

May  9 09:44:32 iKone WorkZone[346] <Notice>: 6.0.0 - [Firebase/InstanceID][I-IID003014] Error while reading embedded mobileprovision Error Domain=NSCocoaErrorDomain Code=260 "The file \M-b\M^@\M^\embedded.mobileprovision\M-b\M^@\M^] couldn\M-b\M^@\M^Yt be opened because there is no such file." UserInfo={NSFilePath=/var/containers/Bundle/Application/26B2725F-4413-4C1B-83B0-511AD5D46260/WorkZone.app/embedded.mobileprovision, NSUnderlyingError=0x2827e63a0 {Error Domain=NSPOSIXErrorDomain Code=2 "No such file or directory"}}

I found similar issue here with phoneGap: https://github.com/arnesson/cordova-plugin-firebase/issues/981 They suggest it is a problem with the new build system. "I had the same problem and it seems to be caused by the fact that your project/workspace is build using the new build system instead of the legacy one. See for example following comment how to change this setting: https://github.com/apache/cordova-ios/issues/412" Upon digging into Titanium's build script (/7.5.0.GA/iphone/cli/commands/_build.js), I found the blacklist and comment suggests if I remove it from the list my app will be rejected to the app store. {color:red} // blacklisted files and directories that throw an error when used and will // lead to a rejection when submitted{color} this.blacklistDirectories = [ 'contents', 'resources', 'plugins', 'watch', '_codesignature', {color:red}'embedded.mobileprovision',{color} 'info.plist', 'pkginfo', 'assets.car', 'modules', 'LaunchScreen.storyboardc', 'hyperloop' ]; Please advise the best way to resolve this issue. Thanks!