Thanks @jrkrideau for your suggestions. I have tried this before but it didn’t work.
This is the error,
Loading required package: devtools
Loading required package: usethis
Error: Failed to install 'unknown package' from GitHub:
HTTP error 404.
Did you spell the repo owner (
Displayr) and repo name (
- If spelling is correct, check that you have the required permissions to access the repo.
Please if let me know if you can help me with this error.