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There are apps that use Firebase Google authentication. When I get the request for this app, I copy the project and change the package name, connect the app to the FireBase with that person's Google account, and provide the app. However, I recently created the app in exactly the same way, but I get an error (ApiException: 12500).

I also changed the SHA-1 key value and confirmed support email, but the same problem is repeated.

Did this error occur because duplicate SHA-1 key values were used? However, changing the SHA-1 key value does not solve the problem.

André Kool
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peterbbong
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  • Possible duplicate of [Google Sign In error 12500](https://stackoverflow.com/questions/47632035/google-sign-in-error-12500) – André Kool Jul 15 '19 at 09:22
  • See my answer here, i'm sure this is the same issue : https://stackoverflow.com/questions/57012033/firebase-sign-in-googlesignin-onactivityresult-returns-result-canceled-with-r/57022055 – Xero Jul 15 '19 at 13:12

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