Update app.py

app.py

@@ -18,5 +18,7 @@ req_file = os.path.join(REPO_NAME, "requirements.txt")
 if os.path.exists(req_file):
     subprocess.run(["pip", "install", "--upgrade", "-r", req_file], check=True)
 
+os.chdir(REPO_NAME)
+
 # Run the app
 runpy.run_path(f"{REPO_NAME}/app.py", run_name="__main__")