since a few weeks an error (503, service unavailable) is occuring on our website (hidden link)
The error is not showing up always, but when navigating to pages where AJAX has to be loaded, the error will occur somethimes. I don't know how to fix this...
In the screenshot I added, you can see the log says that the source admin-ajax.php can not be loaded. Can you guys see what the problem is?
Pages where ajax is used are: hidden link hidden link (bottom of the page, where the cases are listed up)
From what I can see this is a heavily customized version of our Toolset Starter theme. It should be noted that this theme is No longer supported so if the issue is with the theme or compatibility with the theme then I wouldn't be able to assist with this.
With that said does the same issue occur when all the non-toolset plugins are disabled?
I looked into my plugins and I see that the sliders (with ajax) are working fine if I deactivate all WPML plugins.
Do you know any recommandations to solve this? Or similar error solutions within WPML?