SendGrid email sender app errors

Hi there, I'm having a little trouble implementing the sendgrid app from your tutorial. I have pretty much followed everything but I seem to getting errors in the response. It's quite difficult to see the alert too, as it literally only stay in view for a second.

Any help would be greatly appreciated.
Many Thanks,


I found the solution myself.

[{ "to": [ { "email": {{ additionalScopeEmail }} } ] }]

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