Thanks for the reply, we have checked the program resulting its our problem that infinite loop happens. ReceiveSSO response is working fine now. However, we are facing a random occuring issue during SLO, the error as shown below:
Sometimes SLO is working fine to redirect into IDP page for login again, sometimes its throwing error message above which is quite unusual.
Appreciate if you can advice on the above matter.
Attached log file for your reference. The error is found under last end line in the log file.