score:2

Accepted answer

the problem: outdated r version

the latest version of rjson (0.2.21) depends on r version >= 4.0.0 (see cran), and it seems like you have r version 3.6.3.

best solution: update r

your best option is to update your version of r before installing rjson or highcharter.

alternatives: install old version of rjson

an alternative is to install an older version of rjson (0.2.20 should work with your version of r).

you can either do this with packages like renv:

renv::install("rjson@0.2.20")

or remotes:

remotes::install_version("rjson", "0.2.20")

or you could download it and install it manually from this mran snapshot.


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