Contents cache demo

Issue: 815

TypeError: Cannot read property 'then' of undefined when "npm run generate"

‘then’ method is so used :

this.$store.dispatch('getOwnerDeptment')
    .then((response) => {
        let result = response.data;
        if (result.code === 0) {
            this.deptList = result.data;
         }
    })

_{This question is available on Nuxt.js community (#c700)}