when i try to run npm start i get following error
‘SINGLE_START’ is not recognized as an internal or external command,
operable program or batch file.
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! email@example.com start:
SINGLE_START=modeler npm run dev
npm ERR! Exit status 1
npm ERR! Failed at the firstname.lastname@example.org start script.
npm ERR! This is probably not a problem with npm. There is likely additional log
ging output above.
kindly help here