Error description

After creating a new project with express in node, enter

npm start

The system reports an error, as shown in the figure:

Solution

After creating a new project, you should enter the following command:

npm install

Load other dependent modules. And then enter it

npm start

You can start the project normally.

Error reason

When express creates a project, for some libraries, such as HTTP errors , these libraries are not the core modules of node, but they must be used by express framework. So we have to use orders

npm install