Windows 10: Drive almost out of space and causing notifications, but doesn't exist

Hi,

For several weeks Windows 10 has been giving me notifications that a Drive E is almost out of space. The notifications occur constantly while I am trying to work and are very annoying. The worst thing is that this is not even a real disk on my computer. It says it is almost full but if I click in there, nothing is there! If I try to access it in Disk Management, I don't get any options other than help, while for the other drives I get a slew of options. Can anyone help me figure out what is going on with this drive and how to stop the constant notifications? I attached several images but I don't use forums a lot and am not familiar with how to put an image right in here.

Thank You!!

:)

 

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