The game objects/chips weren't loading because the mod used an outdated Pastebin URL:
http://pastebin.com/raw.php?i=94dKseJQ

Solution:
1. We located the .json save file in Documents\My Games\Tabletop Simulator\Saves.

2. We replaced all instances of the old URL with the updated format: https://pastebin.com/raw/94dKseJQ

3. Saved the file and reloaded it in Tabletop Simulator — the objects loaded successfully.

Bonus:
If you want to make the fix permanent in the base mod, you can:
• Save the mod as a new game.
• Edit that new .json file the same way.
• Use that as your go-to version instead of the original Workshop one.