Thanks for your question and I'm sorry you're running into this problem. I was able to install
dygraphs in a new project on RStudio Cloud without any issues. Can you share a bit more info on the project you're working with (the URL would be great)? Is it a new project or an existing one? Are you seeing any error messages, and if so, can you share them as well?
Thanks for the reply. I tried closing the project and workspace. It seems to work now.