Unknown (0) Error Code payroll

Hi,
When I click on 'Process Payroll' I'm getting the following error code.

Need help - thanks.

Application Version: 2023.5.1.4
Application File Version: 2023.5.1.4
Incident Id: 5c2045b5-a208-4404-9570-bb5180dbd0c0
Time: Tuesday, 27 June 2023 12:41:59 PM

Code:
Unknown (0)

Message:
(Unknown): ShowUIView(PayrollProcessARLive,...,...)

Stack Trace
----------------------------------------
1 : MYOB.Huxley.API.HuxleyApplicationException
----------------------------------------
MYOB.Huxley.API.HuxleyApplicationException: (Unknown): ShowUIView(PayrollProcessARLive,...,...) ---> MYOB.Huxley.API.HuxleySingleTouchPayrollServiceException: (SingleTouchPayrollServiceCommunicationError): Request to 'https://stp.payroll.prod.myob.com/businesses/af58f627-7f49-4906-b309-65a97161b4c6' failed, StatusCode=500, Reason=Internal Server Error
Exception Parameters (1) --->(0): , ---> MYOB.Huxley.Utilities.RestClient.RestClientException