Error about locale

[BrianLakstins]

I'm getting this error for the

/usr/lib/zabbix/externalscripts/ssltls.check: line 124: warning: setlocale: LC_ALL: cannot change locale (en_GB.UTF8): No such file or directory
Signature Algorithm: sha256WithRSAEncryption Signature Algorithm: sha256WithRSAEncryption

so I changed to en_US.UTF8, but that just gave me the same error (except en_US.UTF8).

I changed to this:

LOC="C.UTF-8"

And set my default local in my Zabbix Docker image by adding to .env_srv

LANG=C.UTF-8 
LANGUAGE=C:en 
LC_ALL=C.UTF-8

So it seems to be working now.