Sporadic problem – couldn’t update a page with links

Replies: 0

WordPress 5.0.3

I have this problem since the very beginning of creating my HP (one month ago, Strato WP Basic).

As long as I have no external links on the page, everything works well.

But when I start to include links on the page (via context menu), worpress tells me “No updating possible” (german: “Aktualisierung fehlgeschlagen”), with no further explanation.

I have no idea what the problem is, since it works sometimes sporadically (mostly when I not had much updated so far).

I found nothing in my google research, but perhaps you have a hint for me.

Here is a picture

https://i.dreamies.de/gidy1n5w9fx.png

Thanks in advance!