We have our Episerver site version 10.10 in Amazon s3 server. It had been hosted for a while and working fine until yesterday when we had a new deployment.
The error is in admin mode which says this (as shown in image)
I know this happens if Websocket feature is not enabled in IIS which is standard fix for this error. But this is already enabled and we have verified it many times in production server. What will be the other reason for this error? can anybody help me on this
Regards,
Ashish