Found the following (possibly) invalid URLs:
URL: doi:10.1016/j.socnet.2014.04.001
From: man/freeman.Rd
man/netseg-package.Rd
Message: Invalid URI scheme (use \doi for DOIs in Rd markup)
DOI markup has been fixed.
URL: http://cranlogs.r-pkg.org/ (moved to
https://cranlogs.r-pkg.org:443/)
From: README.md
Status: 200
Message: OK
Please change http --> https, add trailing slashes, or follow moved
content as appropriate.
Change to https.
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