“Oops! Something went wrong” when trying to send feedback

[sanzeeb3]

Report: https://wordpress.org/support/topic/getting-oops-something-went-wrong-when-trying-to-send-feedback/

The plugin works and deletes the account. However, when the user is trying to send feedback, it displays the “Oops! Something went wrong” error message for a few seconds and then redirects the user back to the login page.

There are no errors logged in the PHP error_log on the server.

Tried to debug it myself by adding some debug response messages to the delete_feedback_mail() callback. But it seems as if it isn’t even executed, because when entering a message and clicking on the “Delete Account” button, the following POST call in the network tab remains completely empty. No response code, request tab is empty, answer tab is empty. Just the error message and then the redirect.