TF10158: The user or group name dashboard/dashboards contains unsupported characters | Azure DevOps Error

Full Error:
TF10158: The user or group name dashboard/dashboards contains unsupported characters, is empty, or too long.

Solution
This error during REST API call to create/edit/update dashboards and this denotes the url in the call itself is wrong. Check the url you are calling, It might be mostly due to the incorrect url that is being called