Config.php edited, still error, untrusted domain

Hello to each other

“trusted_domains” doesn’t work. Environment: Ubuntu 18.04, snap,

excerpt config.php:

‘trusted_domains’ =>
array (
0 => ‘domainxxx.de’,
1 => ‘192.168.123.29’,
),

nextcloud.occ config:system:get trusted_domains prints out:

domainxxxx.de
192.168.123.29,

but “domainxxx.de” is output as untrusted domain, why

Many greetings
Tim