What version are you using? (9.x.x?)
Issue similar to this was addressed earlier in the year...
Would you be able to share the workbook (without the data)?
Maybe you can use EXTRACT not LIVE data in data source.
I'm using Version 9.3.1
Can you share me the link page where you addressed the problem.
I'm new to Tableau so i'm not sure how can I share you a workbook without data?
This Problem occured after I extract the data and try to select one of the worksheet.
Dear Yashwanth - Looks like this has something to do with the Custom SQL that has written. Please use a simple SQL like
Select * from <Table Name> and try if you are facing the similar error.