I have no working experience with Dash, but comparing with animation in PlotlyJS PlotlyJS.jl animation - #3 by empet, I think that your app doesn’t work because you didn’t pass the frames to the fig definition.
I have no working experience with Dash, but comparing with animation in PlotlyJS PlotlyJS.jl animation - #3 by empet, I think that your app doesn’t work because you didn’t pass the frames to the fig definition.