Can't install any packages at all

Hey guys, I had been using Julia on Ubuntu 21.10 with a good experience until I just switched to OpenSUSE Tumbleweed a few days ago, that I don’t want to explain more detailed.

I want to run Julia as a kernel n VSCode oder a browser-based jupyter-notebook.
So, if I install the Julia extension in VSCode, it fails to load the kernel. As far as I remember that had been the same on Ubuntu. But this wasn’t ab problem because I just used julia installed globally on the system at “/usr/bin/julia” installed via apt.

I reallay woudl like to do the same on SUSE, which provides julia as well via the reps.
But before I can Julia as a jupyter kernel I will have to install the “IJulia” extension. Besides I use the “Plots” extension.

So, I called the Julia shell and tried to install these packages as I had done on Ubuntu before.
As I do this, I just get:

julia> Pkg.add("IJulia")
  Installing known registries into `~/.julia`
┌ Error: curl_multi_socket_action: 8
└ @ Downloads.Curl /home/abuild/rpmbuild/BUILD/julia-1.6.3/usr/share/julia/stdlib/v1.6/Downloads/src/Curl/utils.jl:36

If I try another package such as Plots, I get exactly the same error message.

If I try to update Julia I get the same error message:

julia> Pkg.update()
  Installing known registries into `~/.julia`
┌ Error: curl_multi_socket_action: 8
└ @ Downloads.Curl /home/abuild/rpmbuild/BUILD/julia-1.6.3/usr/share/julia/stdlib/v1.6/Downloads/src/Curl/utils.jl:36

If I try to build it, Julia crashes completely:

julia> Pkg.build("IJulia")
Busfout (geheugendump gemaakt)

In the first error messages there occurs the word “rpm”. This may refer to SUSE.
Can you help me making Julia work on my system?