When uploading the multibyte file such as (テスト.jpg) with django-s3direct

This error comes in browser console.

Uncaught (in promise) TypeError: n.includes is not a function (s3direct.js:51)
    at m.warn (s3direct.js:51:2581)
    at S.y.error (s3direct.js:44:28150)

If you don't use multibytes there is not error occurs.

Is there a any setting I should do for S3 or django-s3direct ?