I recently stumble across a problem using highcharts in R. When simply plotting a map of french departments :

hcmap("countries/fr/fr-all-all")

I see the following error in the prompt

Content type 'text/javascript' length 128539 bytes (125 KB)
==================================================
downloaded 125 KB

Error: parse error: trailing garbage
          [[3530,136],[3530,-689]]]}}]};
                     (right here) ------^

I tried the following but it doesn't seem to work :

remotes::install_github("jbkunst/highcharter")
library(highcharter) 
hcmap(map ="custom/world-highres2.js")

I'm not really advanced in JavaScript so I can really dive into low-level details. Furthermore, this error is new, it used to work about 2 weeks ago.