NNN / Plugins

Hi All,
I can't seem to get any of the nnn plugins to work; eg sxiv with imgview
plugin makes the screen flicker and nothing happens


.zshenv
export NNN_OPTS="aUcExr"
export NUKE_PATH='$HOME/.config/nnn/plugins/nuke'
export NNN_COLORS='6132'
export NNN_FCOLORS='c1e2272e006033f7c6d6abc4'
export NNN_ARCHIVE="\\.(7z|bz2|gz|tar|tgz|zip)$"
export NNN_PLUG='f:fzcd;j:autojump;m:bulknew;a:uidgid;t:treeview;c:rsynccp;y:addtoplaylist;f:mediainf;s:imgview;x:togglex'
export NNN_SEL='/tmp/.sel'
export NNN_FIFO='/tmp/nnn.fifo'
export NNN_TMPFILE='/tmp/.lastd'

imgview plugin
https://github.com/jarun/nnn/blob/master/plugins/imgview

I am unable to utilise the debug feature with nnn (don't think this has
been enabled) Would be most grateful if I could get some pointers Would
be most grateful if I could get some pointers.
Thxs!