R renderPlotly has white background

问题

I am new in R. This moment I am going to draw some visualization using ggplot2 (Everything is done). My visualization has an image as a background. When I am going to use renderPlotly on the server and plotlyOutput in UI, but background is always white. If I use renderPlot on the server and plotOutput in UI, it works fine.

I really need to use renderPlotly. Also, I tried to use ggplotly. ggplotly(ggplot2_object) but background is still white.

Any ideas ?

Thanks !

来源：https://stackoverflow.com/questions/65156155/r-renderplotly-has-white-background