Inserted images don't render

hi all,
I inserted an image via the layout images functions.

I then continued to save the plot as .html in offline mode. Opening the plot in Chrome or Edge displays the inserted image. However, when I then try to edit the .html file online using Chart Studio the image stops being displayed.

Furthermore, when exporting the same plot with the ‘save_as’ (online) function, the image is not being rendered (I tried saving as .svg and .png).

I tried inserting images as .png and .svg files.

Does anyone have a suggestion what could be causing this?

Thanks!

-Retier