Unable to Import an XLSForm

I’ve been unable to import an XLSForm. Please help

Import Failed!
Name: $aNXvYQBRm3hvdu4ULLb2UJ (1).xlsx
IndexError: pop from empty list

Welcome to the community, @oluseyi_oladejo! Would you mind validating your XLSForm through this online validator to see if there are any syntax issues?