Hello Shubham Mishra,
Thanks for your question.
Since some team members can and some cant is likely an issue related to permissions and access control.
You will need to confirm and compare the access of those who can to those who don't on these scopes:
- App insights
- Azure Function App Role Assignments
To do the above, see:
https://learn.microsoft.com/en-us/azure/role-based-access-control/check-access
Please let me know if you have further questions
You can mark it 'Accept Answer' if this helped.