melpa error

[justin-roche]

I'm getting the following error when trying to install in spacemacs off melpa, I don't know if it's maybe an outdated dependency: (file-error "https://melpa.org/packages/visual-fill-column-20200428.816.el" "Not found")
signal(file-error ("https://melpa.org/packages/visual-fill-column-20200428.816.el" "Not found"))

[joostkremers]

You probably need to update your package list, because the current Melpa version of writeroom-mode is 20201229.2242, which is newer than the version your Emacs is trying to install. This happens when you have an outdated package list.