403. That’s an error. We're sorry, but you do not have access to this page. That’s all we know

I have an app that uses OAuth and it works perfectly on my local machine but it keeps throwing the error in the title when deployed to the Streamlit Cloud. The app can be found by going to https://samachar.streamlit.app// . I ensured that the app URL is in my Google API allowed URLs but I do not think this is getting that far. Does anybody have any ideas of what I am missing?

Thank you!