10% building modules 1/1 modules 0 activeevents.js:174 throw er; // Unhandled 'error' event

Preface:

        In normal npm run dev given time prior to running the project of  10% modules Building modules 1/1 0 activeevents.js: ER 174 the throw; // Unhandled 'error' Event ,

Given reasons:
        1, the original is not set host , or host not;

        2, I check in online is also said to be occupied by the port number, but changed or incorrect report

Solution:

The  config / index.js the host into localhost

It ends here!