Firebase not sending OTP code to phone the second time

In my app, I’m using Firebase to verify the user’s phone number. However, the verification system is inconsistent and sends the OTP only the first time. For example, I get the OTP when I’m signing in for the first time, but if I log out and try to sign in again, I don’t get the OTP.

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I am also Having 99% same problem plz help to solve it

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