plotly charts Failed to display on Dash application after Deployment on Render - plotly-dash

Thanks for having me
I have recently developed and deployed Dash web app with Python the application was running successfully on my local machine but once I deployed it on render the charts did not display , note that I am using URL to read the data , have a look at myapp.py file in my github repository :https://github.com/Datascientist88/Dash_Dashboard_COVID19_NO_ONE
as well as the dashboard here:https://bahageel-covid19-dashboard.onrender.com
please Help me address this issue
thanks in advance
Hi Guys
Thanks for having me
I have recently developed and deployed Dash web app with Python the application was running successfully on my local machine but once I deployed it on render the charts did not display , note that I am using URL to read the data , have a look at myapp.py file in my github repository :https://github.com/Datascientist88/Dash_Dashboard_COVID19_NO_ONE
as well as the dashboard here:https://bahageel-covid19-dashboard.onrender.com
please Help me address this issue
thanks in advance

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