Ubuntu 20.04: apt.postgresql.org/pub/repos/apt focal-pgdg InRelease' doesn't support architecture 'i386'

Hi,

While this doesn't appear to be a bug that causes problems of any kind, I do have a question about its cause.

The "error" listed in the Subject: line is basically what I'm seeing. The entire message is below, particularly the 'N:' at the end. Is there a repo setting I should change to prevent the request for '386' architecture? Thank you in advance for your assistance.

user(at)ubuntu:~$ sudo apt update

Hit:1 http://us.archive.ubuntu.com/ubuntu focal InRelease
Get:2 http://us.archive.ubuntu.com/ubuntu focal-updates InRelease [107 kB]
Get:3 http://security.ubuntu.com/ubuntu focal-security InRelease [107 kB]
Get:4 http://us.archive.ubuntu.com/ubuntu focal-backports InRelease [98.3 kB]
Get:5 http://us.archive.ubuntu.com/ubuntu focal-updates/main amd64 DEP-11 Metadata [90.4 kB]
Hit:6 http://apt.postgresql.org/pub/repos/apt focal-pgdg InRelease
Get:7 http://us.archive.ubuntu.com/ubuntu focal-updates/universe amd64 DEP-11 Metadata [21.4 kB]
Get:8 http://us.archive.ubuntu.com/ubuntu focal-backports/universe amd64 DEP-11 Metadata [532 B]
Get:9 http://security.ubuntu.com/ubuntu focal-security/main amd64 DEP-11 Metadata [16.6 kB]
Get:10 http://security.ubuntu.com/ubuntu focal-security/universe amd64 DEP-11 Metadata [208 B]
Fetched 441 kB in 1s (367 kB/s)
Reading package lists... Done
Building dependency tree
Reading state information... Done
All packages are up to date.
N: Skipping acquire of configured file 'main/binary-i386/Packages' as repository 'http://apt.postgresql.org/pub/repos/apt focal-pgdg InRelease' doesn't support architecture 'i386'

Thanks,
Hugh