相关疑难解决方法(0)

I am using ng2-charts in Angular 7 app and having warning

WARNING in ./node_modules/ng2-charts/fesm5/ng2-charts.js 230:54-72 "export '??defineInjectable' was not found in '@angular/core'

error in VS Code

error in browser

What could be the reason and how to resolve it?