GNOME 42 runtime is no longer supported
On the release of GNOME 44, the GNOME 42 runtime was deprecated. As suggested by Flatpak, please migrate to a newer version of the runtime:
Info: runtime org.gnome.Platform branch 42 is end-of-life, with reason: The GNOME 42 runtime is no longer supported as of March 21, 2023. Please ask your application developer to migrate to a supported platform. Info: applications using this runtime: org.gnome.Solanum
I hope it's not too much work!