Cannot load .main file

[Sooner0931]

Hi all,

I cloned the repo locally and executed on VS code from both Windows and Ubuntu, and I got the same result says that "no command uvicore found" first, then I searched solutions and someone suggests using "python -m uvicore app.main:app --reload" instead of "uvicore app.main:app --reload" , after I re-installed uvicore using 'pip install uvicore[standard]', I could run the code by "python -m uvicore app.main:app --reload", however, it says that the main.py file cannot be loaded, as depicted in the following pic

I have no idea what's going on? Any thoughts to solve this problem? thx