What potential issue could cause a PHP form submission to result in a 404 error?

One potential issue that could cause a PHP form submission to result in a 404 error is if the form action attribute is pointing to a non-existent URL or a URL that does not handle form submissions. To solve this issue, ensure that the form action attribute is pointing to the correct URL where the form submission logic is implemented. 

<form method="post" action="process_form.php">
    <!-- Form fields go here -->
    <input type="submit" value="Submit">
</form>

Keywords

PHP form submission 404 error server configuration URL redirection

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