NPM error install Ionic

Getting the following error when trying to install Ionic with NPM. Says to post here. Thanks for any help.

npm install -g ionic
Unhandled rejection Error: EACCES: permission denied, open '/Users/keenan.olsen/.npm/_cacache/tmp/c5d19a2b'

npm ERR! cb() never called!

npm ERR! This is an error with npm itself. Please report this error at:
npm ERR!     <https://npm.community>

npm ERR! A complete log of this run can be found in:
npm ERR!     /Users/keenan.olsen/.npm/_logs/2019-09-03T05_59_05_288Z-debug.log



keenan.olsen ~ $ sudo npm install -g ionic
Password:
Unhandled rejection Error: EISDIR: illegal operation on a directory, open '/Users/keenan.olsen/.npm/_cacache/content-v2/sha512/bb/02'

npm ERR! cb() never called!

npm ERR! This is an error with npm itself. Please report this error at:
npm ERR!     <https://npm.community>

npm ERR! A complete log of this run can be found in:
npm ERR!     /Users/keenan.olsen/.npm/_logs/2019-09-03T05_59_44_718Z-debug.log

Iā€™ve tried to clear npm cache and run with sudo command

Tried this command and iā€™m still getting the same error

This has probably been fixed in latest npm, What version of npm and node are you using?

npm --versions
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