fatal error: could not build module 'Firebase'

[Joel Skrepnek]

Hi. We started experiencing build errors for iOS related to Firebase and this plugin out of the blue recently (May 24th). Are you aware of anything external that might of changed that would have triggered this?

While building module 'Firebase' imported from Plugins/cordova-plugin-firebase-config/FirebaseConfigPlugin.h:2:
In file included from <module-includes>:1:
ios/platforms/ios/Pods/Firebase/CoreOnly/Sources/Firebase.h:1:9: fatal error: 'FirebaseCore/FirebaseCore.h' file not found
#import <FirebaseCore/FirebaseCore.h>
        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1 error generated.
In file included from /Plugins/cordova-plugin-firebase-config/FirebaseConfigPlugin.m:1:
Plugins/cordova-plugin-firebase-config/FirebaseConfigPlugin.h:2:9: fatal error: could not build module 'Firebase'
@import Firebase;
 ~~~~~~~^~~~~~~~
2 errors generated.
** BUILD FAILED **

Version 1.2.1.

[Maxim Chemerisuk]

I've forced cordova >= 9.0.0 in v2.0.4