python main.py or dist\fish.exe did not respond. What's the problem?

I executed the command according to the following steps. After many attempts, there was nothing unusual in the last time. But in the end, python main.py or dist\fish.exe did not respond. What's the problem?

Build from Source  
conda create -n pyqt python=3.10
conda activate pyqt
pip install pdm
pdm sync
pip install -e .
pdm run build.py

Debug  
conda activate pyqt
python main.py
