Since we made several changes in our sandbox, I retrieve the data from sandbox' package again this morning and pushed it into a brand new scratch org. And I am getting a series of errors when pushing the code, as below:
Can't specify an external sharing model for UK_Case__c
When looking at github history of this file, I don't the the external sharing model has changed much. The changes are actually on that we have enabled feeds and track feed history in that object.
So what might have caused the issue in this case?