CurseForge Server pack itself and the installation process it executes does not gather all necessary mods to function properly. Only client is capable of doing this via CurseForge.

Everything is fine. The server's mod folder was empty. Thanks for your time!

The server zip we currently have has all the pack mods, apart from the 2 or 3 Client only mods that do not get installed server side, bundled in the zip file along with the configs and KubeJs files.

Right. I checked and compared to the old server version and the new version has 4 missing mods and the server complains about over twenty missing mods and mappings when I move the old world over to the new server file system. Also, CurseForge on my client doesn't acquire all required mods either since my fiance has over 320 mods and I only have 318 after the update. When I join the server, it complains that the server is missing over 94 mods. Attached is the latest.log of the client used