Please run !pip3 install matplotlib as well and it should solve your issue! We will make sure to add that to the lessons.
As of September 2021, we have moved technical support to Robolink Help
Welcome to the Robolink Community forum!
You can post here to interact with others in the Robolink community. We're checking it weekly, and we'll respond to some messages. If you're looking for technical support, head over to Robolink Help.