javascript - vue-cli hot update problem [webpack configuration]

Question

Sometimes hot update is possible, sometimes not. . . I checked the information and it is related to this. How can I solve this problem~~? ?

Answer 1

Did you close the project port? For example, if you start npm run dev in cmd, you accidentally turn off cmd. There is no port 8080

Answer 2

Is your project still running? . . I think the project must have been shut down as well. If you don’t believe me, refresh with F5 and see,

Answer 3

The project is no longer running. . .