Why am I getting error while adding service in EmailJS?

Question

I am getting 412 Gmail_API: Request had insufficient authentication scopes while trying to configure service in Email JS. Also, receiving the same error while sending email using React.js library.

Below is the screenshot of the error.

Image displaying error while adding service

Answer 1

I had the same and submitted the question, their answer was: "To solve this problem, you need to go to EmailJS dashboard -> Services, click on the Gmail service in your list, and reconnect your account. Please click on the checkbox "Send email on your behalf" to allow us to send the emails through your Gmail account. The new Gmail access popup leaves all permissions disabled by default."