Issue with load_all due to missing rprojroot

[mhesselbarth]

I currently ran into the issue that I couldn't use pkgload::load_all(). The issue was that I didn't have the rprojroot package installed, so it couldn't import rprojroot_find_package_root_file. However, due to the tryCatch call the error message was very confusing (namely that no DESCRIPTION file could be found).

I am not sure this is relevant for any other users, but I think the error message or the import of rprojroot could be improved.

[FinYang]

I just had this same problem when deploying a Shiny app. Because I could only see the logs and not debug interactively, I kept trying to inspect the current working directory and the DESCRIPTION file, thinking it's something wrong with my DESCRIPTION, until I found this issue. (Thanks!)