Traceback (most recent call last):
  File "wsgi.py", line 10, in <module>
    from app import app
  File "/home/yxqfegek/public_html/iotondchain/app.py", line 13, in <module>
    app.mount("/web-visualizer", StaticFiles(directory="web-visualizer", html=True), name="visualizer")
    ^^^
NameError: name 'app' is not defined