Angular 找不到API编译器cli，函数版本错误：找不到API编译器cli，函数版本

我创建了一个新的angular 6应用程序，当我尝试使用ng serve-open运行该应用程序时，会出现此错误。可能是什么原因导致错误，我应该怎么做才能修复此错误

试试这个

Step 1: npm install -g @angular/cli@latest 
Step 2: ng new name-of-project (ignore if project already created) 
Step 3: cd name-of-project (ignore if project already created) 
Step 4: npm install @angular/cli --save-dev 
Step 5: npm install @angular/compiler-cli --save-dev 
Step 6: ng serve 

Step 1: npm install -g @angular/cli@latest 
Step 2: ng new name-of-project (ignore if project already created) 
Step 3: cd name-of-project (ignore if project already created) 
Step 4: npm install @angular/cli --save-dev 
Step 5: npm install @angular/compiler-cli --save-dev 
Step 6: ng serve