Running: Joomla 3.8.7 and PayPlans 3.6.3.
When clicking Upgrade button in Profile, the following error message is displayed:
http://www.califaep.org says
An error has occured
<strong>AJAX Loading Error</strong><br/>HTTP Status: 404 (Not Found)<br/>Internal status: error<br/>XHR ReadyState: 4<br/>Raw server response:<br/><!DOCTYPE html>
<html lang="en-gb" dir="ltr">
<head>
<meta charset="utf-8" />
<title>404 - Category not found</title>
<link href="/templates/system/css/error.css" rel="stylesheet" />
<!--[if lt IE 9]><script src="/media/jui/js/html5.js"></script><![endif]-->
</head>
<body>
<div class="error">
<div id="outline">
<div id="errorboxoutline">
<div id="errorboxheader">404 - Category not found</div>
<div id="errorboxbody">
<p><strong>You may not be able to visit this page because of:</strong></p>
<ol>
<li>an <strong>out-of-date bookmark/favourite</strong></li>
<li>a search engine that has an <strong>out-of-date listing for this site</strong></li>
<li>a <strong>mistyped address</strong></li>
<li>you have <strong>no access</strong> to this page</li>
<li>The requested resource was not found.</li>
<li>An error has occurred while processing your request.</li>
</ol>
<p><strong>Please try one of the following pages:</strong></p>
<ul>
<li><a href="/index.php" title="Go to the Home Page">Home Page</a></li>
</ul>
<p>If difficulties persist, please contact the System Administrator of this site and report the error below.</p>
<div id="techinfo">
<p>
Category not found </p>
</div>
</div>
</div>
</div>
</div>
</body>
</html>
When clicking Upgrade button in Profile, the following error message is displayed:
http://www.califaep.org says
An error has occured
<strong>AJAX Loading Error</strong><br/>HTTP Status: 404 (Not Found)<br/>Internal status: error<br/>XHR ReadyState: 4<br/>Raw server response:<br/><!DOCTYPE html>
<html lang="en-gb" dir="ltr">
<head>
<meta charset="utf-8" />
<title>404 - Category not found</title>
<link href="/templates/system/css/error.css" rel="stylesheet" />
<!--[if lt IE 9]><script src="/media/jui/js/html5.js"></script><![endif]-->
</head>
<body>
<div class="error">
<div id="outline">
<div id="errorboxoutline">
<div id="errorboxheader">404 - Category not found</div>
<div id="errorboxbody">
<p><strong>You may not be able to visit this page because of:</strong></p>
<ol>
<li>an <strong>out-of-date bookmark/favourite</strong></li>
<li>a search engine that has an <strong>out-of-date listing for this site</strong></li>
<li>a <strong>mistyped address</strong></li>
<li>you have <strong>no access</strong> to this page</li>
<li>The requested resource was not found.</li>
<li>An error has occurred while processing your request.</li>
</ol>
<p><strong>Please try one of the following pages:</strong></p>
<ul>
<li><a href="/index.php" title="Go to the Home Page">Home Page</a></li>
</ul>
<p>If difficulties persist, please contact the System Administrator of this site and report the error below.</p>
<div id="techinfo">
<p>
Category not found </p>
</div>
</div>
</div>
</div>
</div>
</body>
</html>