Asynchronous loading not working after PHP server update

Hi!

We made a PHP server update and also updated to the latest worpress version.
Now something weird happened. Asynchronous loading in the backend doesn’t work. So for example:

If I search for a plugin the loadings stucks and I see no results. Same when I search for my media (see screenshot below).

https://www.mirrorlessrumors.com/wp-content/uploads/2019/05/Bildschirmfoto-2019-05-09-um-20.05.17.png

Any idea what might be the cause of this?

Thanks!

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Additional notes: Issue repeats on any browser (Safari, Chrome, Firefox). Also tried different user logins.

• This topic was modified 5 years, 6 months ago by 43rumors.