I faced same error when installing the UiPath studio in user mode.
Below are the steps I performed to resolve this Issue.
1) Create a robot for your user id
Note: To add the robot, go to Manage Access in Tenant Section
2) Assign license to the robot
Note: To add the license, go to admin section and select “License Allocation to users”
- Try login in in studio using orchestrator URL
Thanks
John Felix