Errors with the prefix SBR.GEN.FAULT usually indicate there's an issue at the ATO and you should try again later. According to the ATO's known outages page, they had a scheduled outage from 11.30pm AEST Friday 19/06/2020 to 7.00am AEST Monday 22/06/2020 which is most likely why you saw this error. You can check whether the lodgement failed or is queued for submission and how to proceed by:
Feel free to reply if you have further questions as I'm here to help.
Thank you for letting us know. Recently there was maintenance on the ATO server which could be causing this error.
Could you please try following the steps in the below article to help resolve this:
If you require further assistance can you please follow the contact us link below so that we can connect with you directly and help resolve this.
Thank you, Kay.