OnlyOffice - Problems with the insertion of pictures

Hello everybody,

I have the following environment

  • Nextcloud 18.0.2
  • Community Document Server 0.1.5
  • OnlyOffice 4.1.4

and the following problem. When I open a document in OnlyOffice and want to insert a picture there, I have to use the “Picture from file” option. With the two other options “Image from URL” and “Image from memory” OnlyOffice goes into an endless loop, but does not insert an image.

Is the problem known, or rather, which log files do I have to look into to find a possible error?