Vue proxy configuration and cross-domain

The

vue project has always been modified and modified on the existing basis. Now a new project has started, and it has been found that domain name proxy configuration and cross-domain problems have not been solved. Under the explanation of God, many online code methods have been tried or failed. The details are as follows:
1, the interface given by the backend is as follows: http://conference-beta.mamaqunaer.com/v1/admin
2, local opening is localhost:8080 ;
3, change url: div.sale.mamaqunaer.com with ngix, and you can open the local area normally.
4, then configure index.js, under config to write under dev:
`proxyTable: {

        "/api": {
            target: "http://conference-beta.mamaqunaer.com",
            changeOrigin: true,
            pathRewrite: {
                "^/api": ""
            }
        }
    },

`
. After opening the page, the API reports an error:

I don"t know what"s wrong

Webpack vue.js

May.06,2021

'/ api' change to'/ v1 api', pathRewrite Delete

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