Microsoft Graph Api - Create team Visibility : HiddenMembership error

I'm having the same issue, I think creating the group first and then applying a Teams template to it might be a workaround while waiting on a fix to the beta endpoints: https://docs.microsoft.com/en-us/graph/api/team-post?view=graph-rest-beta&tabs=http#example-4-create-a-team-from-group

Before this problem, I hadn't realised you could create a templated team from an existing group. I haven't tried yet, but hope it works as have a lot of people waiting on Teams being created from a recent change in timetables. my only worry is i know that the educationClass template with Teams usually applies a number of settings on the underlying created 365 group, like not sending out the email for users joining, etc.