TypeError: Cannot read property “source” from undefined

Question

I\'ve searched through the forums a few times and I wasn\'t able to suss out an answer to my issue.

I\'m using Google Sheets to track project progress for my team.

Answer 1

Looks that you are running the function from the Script Editor. In this case, event is undefined. To learn about how to test a trigger function see How can I test a trigger function in GAS?