Error getting nmap to read hosts from file

[Kurt Buff <kurt.buff () gmail com>]

All,

I'm getting an error trying to run a simple scan with Nmap, as shown.
Running in a CMD session on Win10 20H2. Scans with Zenmap work when not
using a file, as does Nmap. It's just when trying to use a file that I get
this very strange output. I've upgraded npcap from 1.10 to 1.31, and get
the same behavior out of both.

Am I doing something ignorant/stupid, or have I stumbled upon a bug?
Further information gladly provided.

nmap -iL c:\temp\Hosts.txt
Starting Nmap 7.91 ( https://nmap.org ) at 2021-06-08 14:19 Mountain
Daylight Time
Failed to resolve " ■1".
Failed to resolve "0".
Failed to resolve ".".
Failed to resolve "1".
Failed to resolve ".".
Failed to resolve "2".
Failed to resolve "0".
Failed to resolve ".".
Failed to resolve "2".
Failed to resolve "1".
Failed to resolve "0".
Failed to resolve ".".
Failed to resolve "1".
Failed to resolve ".".
Failed to resolve "2".
Failed to resolve "0".
Failed to resolve ".".
Failed to resolve "1".
Failed to resolve "1".
Failed to resolve "1".
^C

Hosts.txt looks like this:
10.1.20.2
10.1.20.11
10.1.20.114
10.1.20.129
10.1.20.132
10.1.20.139
10.1.20.140
10.1.25.121

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