R CMD check fails

[jsonbecker]

fix this R CMD check ERROR: Running examples in
‘vegalite-Ex.R’ failed The error most likely
occurred in: > ### Name: from_spec > ### Title: Take
a JSON Vega-Lite Spec and render as an htmlwidget >
### Aliases: from_spec > > ### ** Examples > >
from_spec("http://rud.is/dl/embedded.json") Error in
file(con, "r") : cannot open the connection Calls:
from_spec -> readLines -> file Execution halted

This may be isolated to my local machine so I'd love to know if anyone can replicate this issue.

[mdlincoln]

I've found the same error while doing revdep checks on clipr.

[hrbrmstr]

it cld be due to my site redirecting to https which doesn't work with readLines