Could not determine the dependencies of task ':firebase_admob:generateDebugRFile' #

I get an error when trying to run my flutter app [Fatal Error] play-services-measurement-sdk-api-17.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] play-services-measurement-sdk-api-17.0.0.pom:2:1: Content is not allowed in prolog. [Fata...