this error occurs, what should I do?
it appears when I use the workbench.
Sorry, for some reason I was not being notified about the last few comments and only noticed them now.
This is a bug related to using an old save, unfortunately it required the shops to be reworked, so it will only be fixed on v0.05.
I don't have an exact date for the release yet, but it's already in the final stage of development.