Hi, @Aryan Raj Welcome to Microsoft Q&A thanks for posting your question
I understand that the logs displayed as This is an evaluation version. There are [21] days left in the evaluation period.
and exits immediately afterward
Yes, the message "There are [21] days left in the evaluation period" is simply a placeholder message that is displayed during the preview period of the Cosmos DB emulator.
If you have any further questions or concerns,please do let me know
Regars
Geetha