After updating to 2033, players may experience an error in their inventory when all items and their tool belt are missing along with sills resetting to 0. This is appears to only affect some saves and likely those created in 2009 where a player was using a tool belt. Not being able to craft a tool belt is also part of this error.
There is no workaround, however if a player does not save the game, it is possible a fix may prevent the error from occurring when loading a save restoring the inventory and skills. While not ideal we recommend players do not save if this has occurred for them while the team work on a solution.
EDIT: If you have not yet updated your game, check out @alkewper74’s workaround directly below that worked for them. As always, please exercise caution when using workarounds with saves and consider backing up your saves first.