Syntax Error: TypeError: Cannot read properties of null (reading ‘content‘)

vue源代码
 

<script lang="ts">

export default {

  name: 'MenuItem',

  functional: true,

  props: {

    icon: {

      type: String,

      default: ''

    },

    title: {

      type: String,

      default: ''

    }

  },

  render(h, context) {

    const { icon = '', title = '' } = context ? context.props : {}

    const vnodes = []

    if (icon) {

      vnodes.push(<svg-icon icon-class={icon} />)

    }

    if (title) {

      vnodes.push(<span slot='title'>{(title)}</span>)

    }

    return vnodes

  }

}

</script>


报错
 

 ERROR  Failed to compile with 1 error                                                                                                                   23:41:39
 error  in ./src/layout/components/Sidebar/Item.vue?vue&type=script&lang=ts

Syntax Error: TypeError: Cannot read properties of null (reading 'content')
大佬能看看什么情况吗