Could not find API compiler-cli, function VERSION Error: Could not find API compiler-cli, function VERSION

Question

I created a new angular 6 app, when I try to run the app using ng serve --open it gives this error. what might be causing the error and what should I do to fix this?

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 Could not find API compiler-cli, function VERSION Error: Could not find API compiler-cli, function VERSION
 at _error (/home/linux/Documents/angu/my-app/node_modules/@ngtools/webpack/src/ngtools_api.js:8:11)
 at getApiMember (/home/linux/Documents/angu/my-app/node_modules/@ngtools/webpack/src/ngtools_api.js:11:32)
 at Object.<anonymous> (/home/linux/Documents/angu/my-app/node_modules/@ngtools/webpack/src/ngtools_api.js:50:19)
 at Module._compile (internal/modules/cjs/loader.js:776:30)
 at Object.Module._extensions..js (internal/modules/cjs/loader.js:787:10)
 at Module.load (internal/modules/cjs/loader.js:653:32)
 at tryModuleLoad (internal/modules/cjs/loader.js:593:12)
 at Function.Module._load (internal/modules/cjs/loader.js:585:3)
 at Module.require (internal/modules/cjs/loader.js:690:17)
 at require (internal/modules/cjs/helpers.js:25:18)
 at Object.<anonymous> (/home/linux/Documents/angu/my-app/node_modules/@ngtools/webpack/src/angular_compiler_plugin.js:28:23)
 at Module._compile (internal/modules/cjs/loader.js:776:30)
 at Object.Module._extensions..js (internal/modules/cjs/loader.js:787:10)
 at Module.load (internal/modules/cjs/loader.js:653:32)
 at tryModuleLoad (internal/modules/cjs/loader.js:593:12)
 at Function.Module._load (internal/modules/cjs/loader.js:585:3)

Answer 1

Try this

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