To solve this Angular Job name “getProjectMetadata” does not exist issue then follow below commands.
Initially try updating to the latest version :
ng update @angular/cli @angular/core
Moreover you should update to latest version so updating to latest version works.
If the updating doesn’t work then try downgrading to the the specific version by using the below command.
npm i @email@example.com
Also Look at :
django.core.exceptions.improperlyconfigured: requested setting use_i18n, but settings are not configured