Hi @mayank!
Apologies that you are having difficulty with this upgrade!
Do you have any more details on the types of errors you are receiving? Any errors logged to the event log or system log would be helpful in troubleshooting this as well. Can you provide the full endpoint that you are attempting to hit? Any other details about your setup would be helpful in diagnosing.
Thanks for the input and look forward to hearing more soon.
Thanks,
Josh