Update is not a function

[jrock2004]

I just installed the addon and in a component I just added console.log(this.media.isMobile);. When my page loads I get the error in the console

This is in firefox. Am I missing something

[gzurbach]

I'm experiencing the same issue.

I am updating from "ember-responsive": "^3.0.6" to "ember-responsive": "^4.0.1" and this error is popping up.

For now I'm just going to rollback. Any suggestion on why this could be happening? I am using Ember 3.12.