Upload data error when processing Statistical Meta-analysis

I refered the example data and organized my own data( with feature and area), and then I tried to upload a sample and found if it worked or not.
I chose “sample in column” and click integrity check, it showed

“Data processing information:
Checking data content …failed.
Unknown Error Occurred”

Are there any information I missing or the data format wrong?
The attachment is the data I try.
98U.csv (76.1 KB)

Thanks for any suggestion.

Best regards