Hi @mcsupport,
We’re experiencing the exact same problem that @pronamic_reuel has raised as we were seeing the WordPress error appear in the WP_Cron.
I can be sure that your plugin is causing the error because when I put an echo at the line that Reüel mentioned, I see the output returned when the WP_Cron errors. It also never errors with the plugin de-activated.
Logging into the server and running php -q wp/wp-cron.php in the WordPress root it outputs the following:
<!DOCTYPE html>
<!-- Ticket #11289, IE bug fix: always pad the error page with enough characters such that it is greater than 512 bytes, even after gzip compression abcdefghijklmnopqrstuvwxyz1234567890aabbccddeeffgghhiijjkkllmmnnooppqqrrssttuuvvwwxxyyzz11223344556677889900abacbcbdcdcededfefegfgfhghgihihjijikjkjlklkmlmlnmnmononpopoqpqprqrqsrsrtstsubcbcdcdedefefgfabcadefbghicjkldmnoepqrfstugvwxhyz1i234j567k890laabmbccnddeoeffpgghqhiirjjksklltmmnunoovppqwqrrxsstytuuzvvw0wxx1yyz2z113223434455666777889890091abc2def3ghi4jkl5mno6pqr7stu8vwx9yz11aab2bcc3dd4ee5ff6gg7hh8ii9j0jk1kl2lmm3nnoo4p5pq6qrr7ss8tt9uuvv0wwx1x2yyzz13aba4cbcb5dcdc6dedfef8egf9gfh0ghg1ihi2hji3jik4jkj5lkl6kml7mln8mnm9ono
-->
<html xmlns="https://www.w3.org/1999/xhtml" lang="en-US">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta name="viewport" content="width=device-width">
<meta name='robots' content='noindex,follow' />
<title>WordPress › Error</title>
<style type="text/css">
html {
background: #f1f1f1;
}
body {
background: #fff;
color: #444;
font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
margin: 2em auto;
padding: 1em 2em;
max-width: 700px;
-webkit-box-shadow: 0 1px 3px rgba(0,0,0,0.13);
box-shadow: 0 1px 3px rgba(0,0,0,0.13);
}
h1 {
border-bottom: 1px solid #dadada;
clear: both;
color: #666;
font-size: 24px;
margin: 30px 0 0 0;
padding: 0;
padding-bottom: 7px;
}
#error-page {
margin-top: 50px;
}
#error-page p {
font-size: 14px;
line-height: 1.5;
margin: 25px 0 20px;
}
#error-page code {
font-family: Consolas, Monaco, monospace;
}
ul li {
margin-bottom: 10px;
font-size: 14px ;
}
a {
color: #0073aa;
}
a:hover,
a:active {
color: #00a0d2;
}
a:focus {
color: #124964;
-webkit-box-shadow:
0 0 0 1px #5b9dd9,
0 0 2px 1px rgba(30, 140, 190, .8);
box-shadow:
0 0 0 1px #5b9dd9,
0 0 2px 1px rgba(30, 140, 190, .8);
outline: none;
}
.button {
background: #f7f7f7;
border: 1px solid #ccc;
color: #555;
display: inline-block;
text-decoration: none;
font-size: 13px;
line-height: 26px;
height: 28px;
margin: 0;
padding: 0 10px 1px;
cursor: pointer;
-webkit-border-radius: 3px;
-webkit-appearance: none;
border-radius: 3px;
white-space: nowrap;
-webkit-box-sizing: border-box;
-moz-box-sizing: border-box;
box-sizing: border-box;
-webkit-box-shadow: 0 1px 0 #ccc;
box-shadow: 0 1px 0 #ccc;
vertical-align: top;
}
.button.button-large {
height: 30px;
line-height: 28px;
padding: 0 12px 2px;
}
.button:hover,
.button:focus {
background: #fafafa;
border-color: #999;
color: #23282d;
}
.button:focus {
border-color: #5b9dd9;
-webkit-box-shadow: 0 0 3px rgba( 0, 115, 170, .8 );
box-shadow: 0 0 3px rgba( 0, 115, 170, .8 );
outline: none;
}
.button:active {
background: #eee;
border-color: #999;
-webkit-box-shadow: inset 0 2px 5px -3px rgba( 0, 0, 0, 0.5 );
box-shadow: inset 0 2px 5px -3px rgba( 0, 0, 0, 0.5 );
-webkit-transform: translateY(1px);
-ms-transform: translateY(1px);
transform: translateY(1px);
}
</style>
</head>
<body id="error-page">
<p></p></body>
</html>
I was made aware that it was this plugin causing the issue because my cron logs detected that the http_worker_cron caused the error to be output. I searched my root for http_worker_cron and it showed up in your MailChimp plugin. A quick google found this thread and Reüel’s solution did, in fact, fix the issue.
We’ve had some cron syncing issues on our server but I’m not 100% sure if it’s connected but it is a concern that we’d like to fix to keep the site running well.
Thank you,
Anthony
