plasma-discover 
**
flatpak:ERROR:common/flatpak-utils-http.c:392:flatpak_create_http_session: assertion failed (rc == CURLM_OK): (1 == 0)
Bail out! flatpak:ERROR:common/flatpak-utils-http.c:392:flatpak_create_http_session: assertion failed (rc == CURLM_OK): (1 == 0)
29 -- exe=/usr/bin/plasma-discover
17 -- platform=wayland
24 -- appname=plasma-discover
17 -- apppath=/usr/bin
9 -- signal=6
11 -- pid=189579
18 -- appversion=5.25.4
21 -- programname=Discover
31 -- bugaddress=submit@bugs.kde.org
30 -- productname=discover/discover
12 -- startupid=0
KCrash: Application 'plasma-discover' crashing...
KCrash: Attempting to start /usr/lib/drkonqi

Issue is fixed by no longer using curl for http (set to use libsoup instead now).
No bug reports found yet why it fails with curl....

EDIT:
Adding http2 support to curl is the proper fix, curl is now build with the new nghttp2 package for the http2 support.