Problems with kio (probably)

Hi,

my KDE installation has problems opening files via smb. On my desktop I can open video files via dolphin that are stored on my nas and the video player plays them. That doesn’t work on my Laptop. Strangely some file types can be opened, for example PDFs.

When watching journalctl I can see the following error that seems related:

kf.kio.core: An error occurred during write. The worker terminates now.

Also this when opening via Haruna or Media Player Classic

kwin_wayland_wrapper[70188]: Cannot load libcuda.so.1

Which is probably not related because this Laptop has no nvidia card.

How can I fix this?