This is incorrect. You cannot use a single iterator for all three arrays like this.
You should not need an iterator if you just want to join each array item into a single cell.
Delete this Iterator and use the join function instead directly in the Sheets cell.
Hope this helps! Let me know if there are any further questions or issues.
— @samliew
P.S.: Did you know, the concepts of about 70% of questions asked on this forum are already covered in the Make Academy. Investing some effort into it will save you lots of time and frustration using Make later!