My jetpack contact form throws an unsightly error on a successful submission. Here is a link to a screenshot.
Here is a link to the page in question.
I am using a modified version of the Quantum theme and no other contact form plugins at this time. The bug affects all browsers.
Interestingly, if I purposely leave out a required field, the error looks correct.
The email is successfully sent to the admin on submit.
Any insight is appreciated!