Plugins not compatible?

Support
#1

Hi guys,

I am currently developing the site http://beta.dqs-cfs.com/ and have been encountering a problem that keeps returning. You’ll see that it is a bilingual site. On the pages in English, everything works fine. However, when I am logged into WordPress and want to access one of the pages in German, the admin bar at the top of the screen disappears, the footer does not load properly and the blog roll pretends to be loading, but nothing ever shows. This is what the page http://beta.dqs-cfs.com/de/news/ looks like when everything works:

Now here comes a screenshot of the current problem:

Following your advice, I tried disabling plugins to see if a plugin conflict is creating this. By disabling certain plugins, I can fix the problem. However:

  1. Those plugins are essential to the website
  2. the results are not consistent

A couple of observations:

  • if I disable the plugin Cornerstone, the issue is gone. Obviously then all pages made with Cornerstone are broken, so this is not an option
  • if I disable the plugins “Wordfence Security” and “The Grid” at the same time, the problem is gone.
  • If I then reactivate The Grid and leave Wordfence Security off, the problem persists
  • If I reactive Wordfence Security and leave The Gridd off, the problem persists

So you might think somehow the trio Cornerstone - Wordfence Security - The Grid is incompatible, but here comes the funny part: those three have been working together just fine for a couple of weeks. The problem only came up when I added another plugin today, called WP Google Maps - Pro Addon. Deactivating that plugin, however, has no effect on the problem whatsoever.

This is now the third time that this issue appears after I add a new plugin. My reaction the previous time was to disable a couple of plugins that were less crucial until everything somehow worked again. Now I have run out of non-crucial plugins to disable.

At the beginning I thought specific plugins were causing the problem. Now I’m beginning to think the website can only handle up to 15 (random number, I have not counted them) plugins, and beyond that, it runs out of memory or whatever. This is my absolute layman impression.

I’ll include a secure note with my login details in case you need them.

Any thoughts?

Thanks!

#2

Hi There,

Thank you for writing, but I can’t replicate the issue on my end. Both English and Deutsch page loads fine in both Chrome and Firefox.

Please try clearing your browser’s cache, or better try using the incognito/private mode of the browser.

Cheers,

#3

Hi there,

I tried clearing the cache and I tried multiple browsers and multiple computers. Did you log in when you tried to replicate the problem?

If you are not logged in, the site works fine, with the exception of the second page of the blog roll in German:
http://beta.dqs-cfs.com/de/news/page/2/

When I log in, the problem is more general, but still limited to all pages in German.

I added a secure note above.
Thanks!

#4

More evidence that the problem is broader than just a few specific plugins:

I just tried activating Slider Revolution. As this is a plugin that comes with the X package, you’d expect there to be no compatibility issues. However, as soon as I activate, trying to display one of the pages in German when logged in results in HTTP 500 errors. All pages in english have the missing admin bar and footer.

As soon as I deactivate Slider Revolution, the problems return to the state described above.

#5

Hi There,

Upon checking, it seems that you have enabled IP based restrictions to your site so that we cannot access your site.

As our support located in different countries, you will need to disable this temporarily as we cannot provide any particular IP address.

Thanks!

#6

Sorry about that. Normally I would have just temporarily disabled the Wordfence plugin, but now I get an HTTP 500 error every time I try to access my plugin screen. I have tried removing the limit from the Wordfence options. Can you check if you are able to login now?

#7

Hi There,

Upon checking, I see that you’re running PHP v5.5.9 on your server. WordPress recommended PHP version would be the v7.x or later (https://wordpress.org/about/requirements/). However we recommend at least PHP v5.6.32 or later to avoid incompatibility issues.

You can contact your hosting provider and ask them to update it for you.

Let us know how it goes.
Thanks!

#8

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