This error is caused by a data type other than a string being passed into the Compass-Edu instance.
Make sure that you definately are passing a string, not an object, int etc.
You're trying to perform an action whilst the Compass-Edu instance isn't initialized.
Try waiting for the 'initialized' event.
Unable to find the ... :
If this issue occurs, either something went wrong loading the page, or compass has changed the login page and this library won't work untill updated.
Try making sure you're up to date, if that dosen't help, cry.
Unable to log in ... :
Try reading the issue, it should be decently self explanitory!