ng serve无法在devDependencies中找到“@ angular / cli”

Question

$ ng serve Unable to find "@angular/cli" in devDependencies.

Please take the following steps to avoid issues: "npm install --save-dev @angular/cli@latest" You seem to not be depending on "@angular/core". This is an error.

in the backend(symfony) is run corretly but I had this error in angular js frontend when i want to run my server can someone have a idea why and how i solve

Answer 1

This may happen if you aren't in you root directory of your application. This can happen if you created a new project with the command ng new project-name and then try to run serve command without actually entering the created project directory.
1. Create a new project $ ng new project-name
2. Enter the project directory $ cd project-name
3. Only now run $ ng serve