Raised when the SDK cannot obtain or validate a device token from the auth backend. Surfaces both during the initial token exchange and on subsequent re-issue attempts. When this fires the session is not authenticated; check the underlying error for HTTP-status detail and decide whether to prompt the user to re-authenticate or retry.
ErrorHuman-readable error message.
Underlying error raised during device-token issuance or validation.
Underlying error raised during device-token issuance or validation.