anaconda3\Lib\site-packages\anaconda_ navigator\api\conda_Api.py line 1364 change data = yaml.load (f) to data = yaml.safeload (f) (completely solve the problem, although I don’t know the reason). After changing the code, remember to restart the computer. If it is still stuck on the loading page after restarting, you can close the network and try again. Pro test is effective.