Firebase Invalid Sender. Please help me out, it is urgent. Please don't neglect

[ZIYAF MOHAMMED SADIRI]

Hai,

I am Ziyaf Mohammed. I can't get my app registered in Firebase When i opened the log it is showing an error: E/FirebaseInstanceId: Topic sync or token retrieval failed on hard failure exceptions: INVALID_SENDER. Won't retry the operation.

Please help me it is urgent

[Kato Richardson]

Hello Ziyaf,

Looks like there are a number of problems with the setup (Firebase Auth module isn't found for example). It's also important that your Firebase SDK versions all match. I'd start by making sure that you specified the right google-services version in your root-level (project-level) Gradle file (build.gradle) and that your Firebase dependencies are on the latest versions in your module (app-level) Gradle file (usually app/build.gradle) as described here. If those don't match, you're likely to see a number of issues.

If you're still having trouble, maybe share those two files for reference.

☼, Kato

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Kato Richardson |

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kato...@google.com |

775-235-8398