Graphs not working in Dash

I’m trying to create a Dash app that uses callbacks to update the charts. I am able to fully use this functionality on my laptop, but when I try the same code on my office computer the charts do not appear in the Dash app (other items like dropdowns work however). Could this be due to a corporate firewall ( is blocked on my work computer)? Do the interactive charts in Dash require connection to some sort of plotly server?