Hello Gokula,
Hope you are doing well!!
Could you please check in service center. What are the error details.
Try to right-click the Screen name in Service Studio, and select "Open in Browser". If it then still gives the same error, then probably you haven't Published the most recent version of the espace. So try to publish it one more time from service studio.
If its not works then you can publish the last running version, after that you can create a new page again. Then I think it will work fine.
Hope it helps
Regards,
Ajit Kurane.