401 - Unauthorized

id	message
ACTIVE_USER_REQUIRED	The method is only available to already activated users.
AUTH_KEY_INVALID	The specified auth key is invalid.
AUTH_KEY_PERM_EMPTY	The method is unavailable for temporary authorization keys, not bound to a permanent authorization key.
AUTH_KEY_UNREGISTERED	The specified authorization key is not registered in the system (for example, a PFS temporary key has expired). Delete your session file and login again.
SESSION_EXPIRED	The session has expired.
SESSION_PASSWORD_NEEDED	The two-step verification is enabled, use a password to login.
SESSION_REVOKED	The authorization has been invalidated, because of the user terminating all sessions.
USER_DEACTIVATED	The current user has been deleted/deactivated.
USER_DEACTIVATED_BAN	The current user has been deleted/deactivated by Telegram’s antispam system.