Recently I have had a weird variation of the “that page does not appear to exist” error. Anytime I try to add any URL/link in the body of the event description, I get this error when I click the Preview Or Update button. After this occurs, I can no longer make ANY updates to any of my events, even though they all appear to be present and editable in my staging area as well as on line. I discovered that I can create new events, but I can’t add media or links to the events. The error occurs if I attempt to add media with a URL instead of from the media library. Interestingly, I still can set the featured image successfully. This problem also occurs when I attempt to insert a URL in the event URL field, specifically an external website’s event URL.
I have tried almost all of the recommended “404 error” suggested solutions multiple times, including rolling back plug-ins and theme. I have a very simple installation with only a couple of plug-ins. I’ve flushed permalinks repeatedly, flushed cache in my browser (no cache plug-ins). My current workaround when I need to update an event is to delete the event and recreate it. This works, but I can’t add media to the rebuilt event. I can live with that, but it would be nice to have full functionality back. This is where things stand with WordPress, my theme and plug-ins all up to date. I do my work on Windows 11 using Chrome. The hosting service appears to be a typical WordPress installation on Linux.
The page I need help with: [log in to see the link]
To help us better understand the situation and allow us to reproduce the issue on our end, could you please share a screen recording showing your process of adding URL/link in the body of the event description and inserting a URL in the event URL field? If you could screen record the entire issue, that’d be great!
I’m asking this as I have not been able to reproduce the issue in my testing environment, running only The Events Calendar plugin and the twenty-twenty-one theme.
Thank you so much for checking into this. So this is staying weird. I struggled with this for 3 days before posting the topic. I just tried performing the updates that I tried previously and both updates worked. I can provide videos if I can figure out how to add them to a post. Do I have to put them on YouTube first?
Thanks for your response and for sharing the screen recording — that’s very helpful.
It’s possible the issue is caused by a conflict with your theme or another plugin. To test this, please try activating only our plugins and switch to the Twenty Twenty-One theme. Check if the issue persists.
If the problem is resolved, reactivate your other plugins and theme one at a time to identify which one is causing the conflict.
As always, please perform these tests on a staging version of your live site first. If you don’t have one, you can use the WP Staging plugin to create it.
If the issue continues, I recommend contacting your hosting provider to check whether server-side caching (such as Object Cache) is enabled. If it is, try temporarily disabling it to see if that helps.
Hi Darian, and thanks for the response. I am doing all of my development and testing in a staging area.
So this is fascinating, because I have tried all of the remedies that you suggest. Literally went through everything–except restoring a backup–on Friday, and had the failures that I described in my original post. Now this morning everything is working.
Full disclosure: I’m a retired telecom system engineer with over 40 years in embedded firmware development. Some of my time included developing server-side web interfaces, so I’m not totally unfamiliar with the great job your team is doing with developing these plug-ins, and kudos to you.
That said, I’m concerned when any problem appears and then magically disappears. I’ll investigate the Object Cache with our provider. It seemed to me that the most likely suspect had to do with the permalinks. It’s almost as though the platform had a problem correctly generating the link to the updated post when saving updates or generating the preview.
Is there anything to be investigated on the browser side? Memory-related issues? Just casting about for other things to check. For example, capturing the videos was almost the first thing that I’ve done with my computer this morning.
Anyway, next time this occurs, I’ll be sure to do some video captures before submitting a topic to the forum.
Permalink structure is certainly a potential contributor, especially in environments using translation or multilingual plugins such as WPML or similar tools that filter rewrite rules and URL generation. In these cases, permalink regeneration or rewrite rule conflicts can intermittently affect preview links or updated post URLs. To help confirm whether this is a factor, running a full conflict test (temporarily disabling other plugins and reverting to a default theme) can be very effective in isolating rewrite or filtering conflicts.
On the browser side, issues are less common but not impossible. Things to check if it recurs:
Hard refresh (bypassing browser cache)
Testing in an incognito/private window
Testing in an alternate browser
Temporarily disabling browser extensions
Reviewing console/network logs for failed preview requests
However, browser memory constraints alone would be unlikely to selectively affect permalink generation unless a request was failing silently.
I’m glad everything is currently functioning as expected. If the issue resurfaces, capturing a screen recording along with browser console logs and noting whether permalinks were recently flushed would give us strong diagnostic signals.
Please don’t hesitate to reach out if it happens again or if any new concerns arise — we’re always here to help.
