Scatter in express is showing blank figures with data in hover

scatter plots in express is returning a blank figure with no scatters like this:

![image|690x379](upload://lDcpZ0ubxtHjgNbjG3MRXhtOfCd.png) 
this is my code 

fig7 = px.scatter(features_df, x= ‘vote_average’, y=‘runtime’, hover_name =‘original_title’,template=‘plotly’)
fig7

however , other express tools are working perfectly, it's just the scatter