Failed resolution of: lcom/google/android/gms/safetynet/safetynet

Guys, I saw that there is already a post regarding this subject: problems with logging in using the phone. Before I give up on using this type of authentication, did anyone find out why this error occurred?

A post was merged into an existing topic: Failed resolution of : lcom/google/android/gms/safetynet/safetynet;