Error Creating API Token

When trying to generate an api token from either api or web ui I get an error:

invalid key format - InvalidKeyException (... < CryptoManager:85 < *:52 < TokenManager:73 < SessionResource:154 < ...)

I am using the latest docker image 5.12

Something is wrong with the encryption keys. You can try resetting it. Remove it from the database.

Thanks. That worked