Firebase Undefined symbols for architecture x86_64

Question

I am using firebase as part of a project I am working on in iOS, and I just stumbled upon the following linking error when I try to compile my code against an iPhone 6 or 7

Answer 1

I encountered this issue before, It looks like you need to:

rm -rf ios/Podfile ios/Podfile.lock ios/Pods ios/Runner.xcworkspace

and then run flutter run

Source: https://github.com/flutter/flutter/issues/41900

UPDATE: run this fix the issue too: rm -f ios/Runner.xcworkspace/xcshareddata/WorkspaceSettings.xcsettings