Coverage code report - how to get rid of "else path not taken"?

Question

Vue.js

Good afternoon.
I'm creating a component in VueJS.
The structure of the component is quite simple.

import Spinner from "@/components/spinner.vue"
import Vue from "vue";
import * as uiv from "uiv"

export default {
  name: 'AccessToErpForm',
  components: {
    Spinner
  },
  props: {
    form: {type: Object, default: ()=>({name: null, description: null})},
    formData: {type: Object, default: ()=>({users: [], bases: []})}
  },
  data(){
    return {
      loading: false,
      loadingMessage: "Загрузка данных...",
      selectedUser: null,
      selectedBases: [],
      rights: null,
      cause: null,
      steps: [],
      step: 1,
      activeTab: 'workbases',
    }
  },
  computed: {
    isDataCompleted(){
      if(this.step === 2 && this.selectedBases.length > 0 && this.selectedUser !== null && this.rights !== null && this.cause !== null) {return true}
      return false
    },
    userIsSelected() {const invalidTypes = ['number', 'string', 'boolean', 'undefined']
    return (this.selectedUser !== null && !invalidTypes.includes(typeof(this.selectedUser))) },
    testDataBases(){
      if(!this.bases) {return []}
      return this.bases.filter(item=>item.istestbase)
    },
    workDataBases(){
      if(!this.bases) {return []}
      return this.bases.filter(item=>!item.istestbase)
    },
    visibleNextButton(){return (this.selectedBases.length > 0 && this.step === 1)},
    visiblePrevButton(){return ( this.step === 2)},
  },
  created(){
    this.init()
    },
  methods: {
    async init(){
      this.loading = true
      this.loadingMessage = "Загрузка данных..."
      try {
        this.steps = [{id: 1, title: 'Выберите базы'}, {id: 2, title: 'Выберите пользователя и укажите права и основание для доступа'}]
        const {users, bases} = this.formData
        this.bases = bases
        this.users = users
        this.makeActive('workbases')
      } catch (error) {
        this.loadingMessage = 'Ошибка инициализации...'
        throw new Error(error)
      } finally {
         this.loading = false
         this.loadingMessage = null
      }

  },
    makeActive(val) {
      if(!val) {return false}
      this.activeTab = val
      return true
      },
    isActiveTab(val) {return this.activeTab === val},
    next(){
      if (this.step >= this.steps.length) {return}; this.step = this.step +1},
    prev(){if (this.step <=1 ) {return};this.step = this.step -1},
    setUser(userItem){
      if(!userItem) {return false}
      if (typeof userItem !== 'object') {return false}
      this.selectedUser = userItem
      return true
   },
    submit(){
      const tickeData = {
        form: this.form,
        data: {
          bases: this.selectedBases,
          user: this.selectedUser,
          rights: this.rights,
          cause: this.cause
        }
      }
      this.$emit('done', tickeData)
      return tickeData
    }
  }

}

The code coverage report swears that not all branches are covered by tests.

But I can't figure out what the reporter doesn't like about the default values ​​of data?