Update app.py

app.py

@@ -20,7 +20,9 @@ app = FastAPI(title="File System Test App")
 templates = Jinja2Templates(directory="templates")
 
 # Create files directory if it doesn't exist
+os.makedirs("templates", exist_ok=True)
 os.makedirs("files", exist_ok=True)
+os.makedirs("static", exist_ok=True) 
 
 # Mount files directory as static
 app.mount("/files", StaticFiles(directory="files"), name="files")