ID:16651 Close Interface Planner and open this project in the Quartus Prime software?

CAUSE: You attempted to launch the Quartus Prime software while the Interface Planner is also open. You must close Interface Planner to use the Quartus Prime software. .

ACTION: Click Yes to close the Interface Planner and open this project in the Quartus Prime software or click No to keep the project open in the Interface Planner and cancel opening the Quartus Prime software.