angular9 - why am I getting Unknown option: '--output-hashing' angular 9

Question

we have updated our build command from

"start": "ng serve --configuration=dev --aot --o",

to

"start": "ng serve --configuration=dev --aot --output-hashing=all",

but when i build i am getting the below error

Unknown option: '--output-hashing' npm ERR! code ELIFECYCLE npm ERR! errno 1 npm ERR! client-app@0.0.0 start: ng serve --configuration=dev --aot --output-hashing=all npm ERR! Exit status 1 npm ERR! npm ERR! Failed at the client-app@0.0.0 start script. npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

any idea why and how to solve

question from:https://stackoverflow.com/questions/65924343/why-am-i-getting-unknown-option-output-hashing-angular-9

Answer 1

Waitting for answers