Problem
When sending push notifications in iOS to a reachable user, the "InvalidProviderToken" error occurs.
Explanation
This error typically happens in the following cases:
- The wrong team ID is provided where the AuthKey (.p8 file) is uploaded.
- The wrong key ID is provided where the AuthKey(.p8 file) is uploaded.
- The AuthKey(.p8 file) is revoked in Apple Developer Keys and a new key is generated.
Solution
To resolve this error, the development team must identify and address the abovementioned issues.