Q

The wp-cron.php script now displays no output, so the error is gone. What adjustment did you make?

@lastsplash, I’m sad to report the problem has returned. I’m not sure when it started happening again, I just thought I’d check if it still was working and it is not:

[mtc ~/www/html]$ php wp/wp-cron.php
Cron reschedule event error for hook: jetpack_sync_cron, Error code: invalid_schedule, Error message: Event schedule does not exist., Data: {"schedule":"jetpack_sync_interval","args":[],"interval":300}
Cron reschedule event error for hook: jetpack_sync_full_cron, Error code: invalid_schedule, Error message: Event schedule does not exist., Data: {"schedule":"jetpack_sync_interval","args":[],"interval":300}

Hi @lastsplash,
Whatever you did seems to have fixed the problem. I’m no longer getting errors when running wp-cron.php. Case closed! Thanks!

Hi Daniel,
I have deactivated all plugins except jetpack and the error still occurs.

Hi @lastsplash,
Yes, we’re still having the same issue. When I execute cd /home/mtc/www.ministry-to-children.com/html; php wp/wp-cron.php the output is:

Cron reschedule event error for hook: jetpack_sync_cron, Error code: invalid_schedule, Error message: Event schedule does not exist., Data: {"schedule":"jetpack_sync_interval","args":[],"interval":300}
Cron reschedule event error for hook: jetpack_sync_full_cron, Error code: invalid_schedule, Error message: Event schedule does not exist., Data: {"schedule":"jetpack_sync_interval","args":[],"interval":300}

Hi @ihenetudan,
I think the problem was that you were calling the REST API at /wp/… which was redirecting to WP admin login page because of an apache rewrite rule (we have WordPress installed under a sub-directory /wp/). I’ve updated the rewrite rule to not redirect if the URL contains query params (e.g., ?rest_route=…) and now when I open that URL I get JSON:

{
    "code": "rest_invalid_signature",
    "data": {
        "status": 400
    },
    "message": "The request is not signed correctly."
}

This didn’t fix the original error we’re getting (Event schedule does not exist.) but I think now you should be able to continue with your diagnostics.

Hi Daniel,
The “non-pretty” REST API URL requires a non-empty value provided to the rest_route parameter, i.e., this works: https://ministry-to-children.com/?rest_route=/

This requirement is defined in wp-includes/rest-api.php:

function rest_api_loaded() {
    if ( empty( $GLOBALS['wp']->query_vars['rest_route'] ) ) {
        return;
    }

    // ...
}

So, it seems there must be something wrong with the way you’re running your diagnostic?

Hi @lastsplash,
We received a reply from Ezoic; they said it’s not them blocking the requests from the Jetpack servers. Here’s what they wrote.
But I think I did find the cause of the block: we have the Perfmatters plugin installed, and I think it was configured to block the REST API. I’ve updated this setting to allow, so it should work. Can you try and let me know if you can run a diagnostics now?

Hi Jay, thanks for checking. I’ve just inquired with him again. I’ll let you know.

Hi @lastsplash,
You’re correct, now I see what you mean. The website owner manages Ezoic, so I will forward your request to add the IP addresses to the allow list.

Hello @lastsplash,
We are not using Ezoic, nor any other plugin that would block access to xmlrpc.php. Here is a list of the currently used plugins for this site.
The only requests I see hitting our server from the IPs you provided are with user agent Photon, which I assume is for the images CDN. Please confirm you’re connecting to the xmlrpc script at: https://ministry-to-children.com/wp/xmlrpc.php

Hello @erania-pinnera,

Apologies for the delayed reply. I had to ask the owner of the website to connect Jetpack to his WordPress.com account. Here is a screenshot showing that Jetpack is now fully connected. I regret to report that the wp-cron errors are still happening, even if I run the wp-cron.php script manually like this:

? sudo -u ministry sh -c 'cd /home/ministry/www.ministry-to-children.com/html; php wp/wp-cron.php'
Cron reschedule event error for hook: jetpack_sync_cron, Error code: invalid_schedule, Error message: Event schedule does not exist., Data: {"schedule":"jetpack_sync_interval","args":[],"interval":300}
Cron reschedule event error for hook: jetpack_sync_full_cron, Error code: invalid_schedule, Error message: Event schedule does not exist., Data: {"schedule":"jetpack_sync_interval","args":[],"interval":300}

Hi Bruce. The site URL is ministry-to-children.com

Thanks Michelle,

I’ve reviewed the links you sent but can’t find the documentation for customizing the carousel functionality. I’ve been a full-stack WP developer for 16 years, I should be able to do it myself; I just expected some hints from the community where to get started.

Regards,
Quinn

Great, I’d like to write some custom code. I reviewed the Jetpack documentation but didn’t see any hooks for overriding carousel behavior. Could you give me a clue what kind of custom code can change that animation?