The «Confirm Form Resubmission» Refresh Error can be fixed.

Everyone sees the «Confirm Form Resubmission» problem alert when you reload a page, not just you. When you try to reload a page that was accessed through the submission of a form, the browser prompts you to submit the form data again. Users could find this step unpleasant, even though it is intended to prevent Confirm Form Resubmission. Thankfully, there are a few ways to fix this error.

Use the PRG pattern (Post/Redirect/Get).
The Post/Redirect/Get (PRG) pattern implementation is one popular solution for the «Confirm Form Resubmission» issue. These are the phases that make up this pattern:

1. Request that the form submission be handled by the server.
After a successful form submission, use the HTTP redirect (HTTP 302) status code to send the user to another website.
3. After that, the user is taken to a new page; refreshing the page won't make the form submit again.