Why Does Running ./launch_flowpilot.sh Play the Demo Video Without UI and Results After Building FlowPilot?

[pengjunxing]

Why does the result of running ./launch_flowpilot.sh after I build it play the demo video directly?
it doesn't have ui and result

My run process：
pipenv shell
pip install -r requirements.txt
scons（afer edit dbc.cc like pic.1）
./launch_flowpilot.sh