Auth0.Android: An error occurred while trying to use the Refresh Token to renew the Credentials.

When calling SecureCredentialsManager.getCredentials, when access token has expired, and it is trying to renew access token using the existing refresh token, it will call an onFailure and return an error cause of AuthenticationException

error.message : An error occurred while trying to use the Refresh Token to renew the Credentials. error.cause.message | Request failed error.cause.code | a0.sdk.internal_error.unknown error.cause.description | Received error with code a0.sdk.internal_error.unknown

Reproduction

It is reproducible if we disable network and call SecureCredentialsManager.getCredentials when access token has expired. However, It is happening intermittently that some users cannot refresh their token, not sure if it is purely from network issue or not, as the occurrence in production is really high, I doubt that network issue is the only cause of it. Is there any other possible cause other than network issues?

Environment

• Version of this library used: 'com.auth0.android:auth0:1.23.0'
• Version of the platform or framework used, if applicable:
• Other relevant versions (language, server software, OS, browser): It is happening on all type of device and OS level
• Other modules/plugins/libraries that might be involved: