Thanks that worked
Using my restored pre-update system, I uninstalled TvHeadend client (188.8.131.52) from addons using the Kodi GUI.
I deleted the /storage/kodi./addons/packages folder and contents using WinSCP before copying LibreELEC-RPi4.arm-11.0-nightly-20220727-fcc8f2f.img.gz to the /storage/.update folder.
After rebooting without error, I re-installed TvHeadend client (184.108.40.206) and everything is now working correctly.
Thanks again HiassofT