Error while installing

[jfoclpf]

root@toshiba:/home/jfolpf/formParkingViolation# cordova plugin add https://github.com/domax/cordova-exif.git --save
Error: Failed to fetch plugin https://github.com/domax/cordova-exif.git via registry.
Probably this is either a connection problem, or plugin spec is incorrect.
Check your connection and plugin name/version/URL.
Error: npm: Command failed with exit code 1 Error output:
npm ERR! code 128
npm ERR! Command failed: /usr/bin/git clone --depth=1 -q -b master https://github.com/domax/cordova-exif.git /root/.npm/_cacache/tmp/git-clone-a3619161
npm ERR! fatal: could not create leading directories of '/root/.npm/_cacache/tmp/git-clone-a3619161': Permission denied
npm ERR! 

npm ERR! A complete log of this run can be found in:
npm ERR!     /root/.npm/_logs/2017-10-12T18_17_53_271Z-debug.log