Hi, thank you for reporting this issue.
Could you please provide us with the save file where the issue is occurring so we can investigate it further?
Instruction can be found here: How to Send User Files to The inZOI Team (Updated)
We would also like to confirm your restaurant employee setup. To operate a restaurant, you need to have at least three employees assigned to the Chef, Host, and Server roles respectively.
Could you please check whether these three roles are properly assigned to your employees?
Thank you for your help!