Production Server Error

[Ishan-10038]

Dear Author,
I was running the Object Detection API code on Google Colab. But when I am running app.py code, it gives me this error at the production WSGI Server. **http://0.0.0.0:5000/ **
Error:
The webpage at http://0.0.0.0:5000/ might be temporarily down or it may have moved permanently to a new web address.

Kindly suggest me the steps to solve this issue.