sending csv file via email using power automate shows null value in output

[Nepal101]

Hello, I need some help on this issue. 
I can see the input number but the output data shows a null value. I have added item?()['tablename[column]'] to map the value. 
Can you please help me out I really appreciate it.

[#2 · Accepted solution]

@Nepal101 
I was able to fix this issue by updating the DAX query. The DAX query had one blank header. 
Thank you for looking into it .