Update app.py

app.py

@@ -63,4 +63,4 @@ async def root():
 
 if __name__ == "__main__":
     import uvicorn
-    uvicorn.run("main:app", host="0.0.0.0", port=8000, reload=True)
+    uvicorn.run("app:app", host="0.0.0.0", port=8000, reload=True)