The front-end error report is as follows:
[Vue warn]: Error in render: “TypeError: Cannot read property’_t’ of undefined”

It is the compatibility problem between vue and i18n that multi-language configuration is used in the project. The solution is as follows:

Vue.use(iView) 

Replace with

Vue.use(iView, {
  i18n: function(path, options) {
    let value = i18n.t(path, options)
    if (value !== null && value !== undefined) {
      return value
    }
    return ''
  }
})