I wanted to learn how to build Shiny Apps in R so I started this beginner-level tutorial. However, when I run the app on my desktop (Windows 10 x64, 16GB RAM, 500 GB SSD, i5-3470 CPU, Dual Display) in R Studio 1.3.1093) using R 4.0.3, it loads indefinitely with no error output. I tried running even the basic built-in examples (which you could find here) and they also failed to load. The exact same scripts and examples run on my laptop (Windows 10 x64, 8GB RAM, 250 GB SSD; R & R Studio specs the same) without issue. I've reinstalled the shiny package, reinstalled R and R Studio, and changed whether the app runs internally or externally with no success. I did find this post which seems to have encountered the same issue, but with no solution.

I know it's not much to go on, but I'm at a loss as to the next thing I should check. Any suggestions?

CodePudding user response：

I figured out from this mostly unrelated post that there was a file at the path C:/ Users/.../Documents\R\win-library\4.0/ called 00LOCK which was giving R trouble downloading and updating new packages. I'm not sure how it got there or why R was not telling me there were issues in updating the packages, but the shiny app seems to work perfectly fine now.