[WeChat applet][App.json file content error] app.json: ["usingComponents"]["van-button"]: "@vant/weapp/button/index" not found

 1. Problem description

1.bug

2. Local settings

Details > Local Settings There is no "use npm module" option        (I can't find it anyway)

Two, the cause of the problem

After following the official documents and steps, the file configuration is as follows:

 Open the miniprogram_npm folder

 

 At this point the problem becomes obvious

  "usingComponents": {
    "van-button": "@vant/weapp/button/index"
  }

This way of writing is wrong

3. Solutions

correct spelling

  "usingComponents": {
    "van-button": "/miniprogram_npm/vant-weapp/button/index"
  }

4. Supplement

I see other blogs have this setting

After I tried it, I found that it is not necessary,

After importing in the correct way, there will be no error even if the above configuration is not used                 (I have no bugs)