That usually means the mod didn't update properly if you're running a dedicated server, but if you see the table engram and can craft everything, that sounds like it is working, so I'm not sure why everything would have been removed.

If this is single player, I've seen ARK let you load the game before mods finish updating, even though it's supposed to give you a warning that mods are still updating, which ends up causing the game to load as if the mod is disabled.

ARK is not graceful when things like this happen, so the only option is to revert to an older save if possible.

Thank you for the reply. Unfortunately, there are no saved games from a week ago in the save folder. So you have to build everything again.
But don't worry, I switched to Ark Ascended. So quickly create an add-on for this one.