Firebase\JWT\JWT::decode issue

Getting same error sometimes only, sometimes working fine, not sure what is causing this to happen randomly.

The only way it worked is by downgrading the version of firebase/php-jwt from 6.10 to 6.5 as mentioned in this post:
https://stackoverflow.com/questions/76468099/uncaught-error-firebase-jwt...

Try to downgrade and let us know whether downgrading the library works in your case or not.

Try to composer req firebase/php-jwt:6.5.0

Hope this helps.
Thanks!