npm ERR! missing script: build;

[Solus90]

when attempting to run in development, get below error message when using "npm run dev"

npm run build; nuxt start

npm ERR! missing script: build;
npm ERR!
npm ERR! Did you mean this?
npm ERR!     build

npm ERR! A complete log of this run can be found in:
npm ERR!     C:\Users\Phil\AppData\Roaming\npm-cache\_logs\2020-06-25T13_39_56_199Z-debug.log
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! @ dev: `npm run build; nuxt start`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the @ dev script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     C:\Users\Phil\AppData\Roaming\npm-cache\_logs\2020-06-25T13_39_56_224Z-debug.log