In readr, where combine using parameter col_names = TRUE and col_character as below code3, it's failed and the error message as attached image. Anyone can help
cryptofeed
twitter-bootstrap-4-beta
webpack-bundle
delphi-xe2
warc
symfony-config-component
traversal
wix
pljson
http-status-code-301
busctl
convention
kube-scheduler
sketchware
data-visualization
vdm-sl
php-mysqlidb
oppo
arrayref
spreadsheetgear
python-2.x
ubuntu-11.10
bezier
double-click-advertising
theta360
jsreport
font-family
librt
serial-number
vexflow