[SOLVED] RPi3A+ Network instability.

[TheOldPresbyope]

Two countries separated by more than a common language, eh?

LC_ALL should be empty. For example, from the ArchWiki

LC_ALL is the only LC_* variable which cannot  be set in locale.conf files: it is meant to be used only for testing or troubleshooting purposes, for example in /etc/profile

Don’t know, offhand, what is triggering the error response from locale.
Regards,
Kent