pkgin errors I cannot see how to fix

[steve%prd.co.uk@localhost (Steve Blinkhorn)]

I have:
# uname -a
NetBSD rockall.prd.co.uk 9.2 NetBSD 9.2 (GENERIC) #0: Wed May 12
13:15:55 UTC 2021 amd64

and

PKG_PATH=ftp://ftp.NetBSD.org/pub/pkgsrc/packages/NetBSD/amd64/9.2/All

I get two errors that I do not know how to resolve, or even make a
next move.  When trying to install print/poppler-utils I get:
'
pkg_info: cannot read meta data file +CONTENTS of package gdk-pixbuf2-2.42.12:
No such file or directory
pkgin: Cannot read +CONTENTS of package gdk-pixbuf2-2.42.12

and when trying to install any browser I get:

---Apr 02 16:21:33: [2/3] installing gtk3+-3.24.43nb5...
pkg_add: Package `at-spi2-core-2.54.0nb4' conflicts with
`at-spi2-atk-[0-9]*', and `at-spi2-atk-2.38.0nb2' is installed. 
pkg_add: Package `at-spi2-core-2.54.0nb4' conflicts with `atk-[0-9]*',
and `atk- 2.38.0nb1' is installed.
pkg_add: Can't install dependency at-spi2-core>=2.54.0nb4 
pkg_add: Expected dependency at-spi2-core>=2.54.0nb4 still missing
pkg_add: 1 package addition failed

I understand what thenwords mean but have no idea what to do next to
remedy the missing file and the library conflicts.'
-- 
Steve Blinkhorn <steve%prd.co.uk@localhost>