The key part of this error message is:
"attempted to UPDATE or DELETE the same row more than once"

What this means is that the file that was submitted is attempting to update the same address more than once. This can be caused by users that are sharing an address.

In simple, this means that, if possible, remove all but one row per address that is shared. If uncertain if addresses are shared, you can place them in separate files and submit them in separate batches.

If you are looking for a technical means to examine whether or not an address is shared, you can also create an advanced list ahead of time to pull the 'user address.address id' field for each user. If this ID number matches between two users, then they are sharing the address, and only one needs to be submitted in the Data Import.

Data Import Processed File: SQL Error