RStudio plots empty on other computers

Hello,

I producea series of blots in Rtudio and saved them as .html from the viewer. I can open them in Chrome and Firefox in my computer.

However, when I sent them to a couple of collegues the plots were empty.
Inspecting the page shows the data but the plots are not rendered. One uses Windows 10, the other MAC. Neither Firefox nor Chrome or Safari were able to display them. Opening the attachment from the email or downloading the files didn’t make a difference either.

Any suggestions?