axios: 🐛 [BUG] - TypeError: axios.defaults is undefined in v 1.1.0

Description

I use CDN with https://unpkg.com/axios/dist/axios.min.js without specify version in my project, and before new version release, I can work it well. But after new version release, it will show the error:

TypeError: axios.defaults is undefined

I tried to find some release notes or upgrade guide but I saw someone find them too, so I rollback to old version, and it works now! But I have several pages needs to rollback the version 😢

Is rollback version only way to fix this error?

Code

I used axios with Vue.js, and this is the part in my Vue app:

getProjectSec: function (token) {
    axios.defaults.headers.common['Authorization'] = 'Bearer ' + token;
    // ^^^^^ Uncaught (in promise) TypeError: axios.defaults is undefined

    this.projects(project => {
        axios({
            url: `api/Project/${project.value}`,
            method: 'get',
        }).then(res => {
            // Do something
        }).catch(err => {
            console.log(err.response);
        })
    })
}