Please help me out if use online validator the attachment will disappear and nothing will show up

Please help me out if use online validator the attachment will disappear and nothing will show up.
aT79k8ScSo4Pk5ZHEqr3Pp (1).xlsx (48.9 KB)

@ysabba, it seems like you have no issues with the online validator. I validated and did not get any issues. I could load the form without having any problems. FYR …

Design hint: There might be a problem with your sum calculation (line 455). It seems that you wrote o (letter) instead of 0 (digit).

To treat empty values, you can use coalesce() function instead of if. See I want to show the total of the expenses, but I see that it does not add up the variables - #2 by wroos.