Google apps script webhook url getting unauthrozed error

Hi there, I run a company specializing in Google Apps Script development. In the last two years, we've automated workflows of several of our clients using Apps Script. I am confident of being able to sort out the bugs in your script and help you resolve your error. We are just starting out at freelancer here so I have kept a very low bid as I am doing this for the rating and not the money. Please feel free to write back if you have any questions.

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