Adding and add-on error: implicit conversion of nil into String

When creating a new game I receive the following error: "There was an error when trying to include the addon Ghosts of Saltmarsh (Salvage Operation) : * no implicit conversion of nil into String" Any add-on causes this error. I've tried creating multiple games and the error persists using Firefox or Chrome incognito mode with zero addons loaded. Does anyone have any ideas about what to do next?

I've got the same problem. I bought the Essential Kit and wanted to create a new game with this module. Same problem :  An error occured while adding  Essentials Kit Adventure  to this game: * no implicit conversion of nil into String  

Same problem here when creating a game with the Sunless Citadel.

Good morning! This morning, after some overnight optimizations, we found that several functions related to those optimizations were not working. We have now fixed the issue, and apologize for interrupting your games. If you experienced issues with the following and they still don't work, please comment in  the official bug thread : Copying games Creating a game from a module Seeing marketplace assets in your library Adding an add-on to a game Patching add-ons and modules Thanks for your feedback and patience while we continue to scale up to meet demand. As we are collecting feedback in that thread, I will close this one.