What do these terrible letters mean?

Question

npm

npm WARN [email protected] No repository field.
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: [email protected] (node_modules\fsevents)
: "} (current: {"os":"win32","arch":"x64"})
npm ERR! path D:\Site layout\sedona\node_modules\lodash.defaults\node_modules\lodash.assign\package.json.1992076925
npm ERR! code EBUSY
npm ERR! errno -4082
npm ERR! syscall rename
npm ERR! EBUSY: resource busy or locked, rename 'D:\Site layout\sedona\node_modules\lodash.defaults\node_modules\lodash.assign\package.json.1992076925' -> 'D:\Site layout\sedona\node_modules\lodash.
npm ERR! A complete log of this run can be found in:
npm ERR!
C:\Users\newdecline.DESKTOP-6CUK6TI\AppData\Roaming\npm-cache\ _logs \2019-01-10T12_31_39_026Z-debug.log