Hi Gabriel,
I am Sumit, an Independent Advisor and a 2-Year Windows Insider MVP here to help.
The error code means a device which does not exist was specified.
It looks like the hard drive is wearing out.
Download and run HDTune .
Select the external hard drive.
Make screenshots of the following
the health
the error scan
the benchmark
Post back the screenshots.
Disclaimer:
This is a non-Microsoft website which would provide accurate and safe information. Watch out for ads on the site which are frequently classified as a PUP (Potentially Unwanted Products). There is no need to buy paid products to fix your computers as they do more harm than good sometimes.