Ubuntu 18.04 snap with Only Office app - config help

ubuntu 18.04 server with nextcloud 13 and only office app. Other apps are working but unable to configure only office.
Path to config: /var/snap/nextcloud/current/nextcloud/config$
file config.php
<?php
$CONFIG = array (
‘apps_paths’ =>
array (
0 =>
array (
‘path’ => ‘/snap/nextcloud/current/htdocs/apps’,
‘url’ => ‘/apps’,
‘writable’ => false,
),
1 =>
array (
‘path’ => ‘/var/snap/nextcloud/current/nextcloud/extra-apps’,
‘url’ => ‘/extra-apps’,
‘writable’ => true,
),
),
‘supportedDatabases’ =>
array (
0 => ‘mysql’,
),
‘memcache.locking’ => ‘\OC\Memcache\Redis’,
‘memcache.local’ => ‘\OC\Memcache\Redis’,
‘redis’ =>
array (
‘host’ => ‘/tmp/sockets/redis.sock’,
‘port’ => 0,
),
‘instanceid’ => ‘oca4sfs25t3v’,
‘passwordsalt’ => ‘smesHCXIjE6UpBfFSjGIpRUzBgcsxk’,
‘secret’ => ‘KMMGZMLJmvGO0Hgmu2/Ffs57ioOFZOaiCV+7K1’,
‘trusted_domains’ =>
array (
0 => ‘192.168.1.16’,
1 => ‘47.213.248.163’,
),
‘datadirectory’ => ‘/var/snap/nextcloud/common/nextcloud/data’,
‘overwrite.cli.url’ => ‘http://192.168.1.16’,
‘dbtype’ => ‘mysql’,
‘version’ => ‘13.0.4.0’,
‘dbname’ => ‘nextcloud’,
‘dbhost’ => ‘localhost:/tmp/sockets/mysql.sock’,
‘dbport’ => ‘’,
‘dbtableprefix’ => ‘oc_’,
‘mysql.utf8mb4’ => true,
‘dbuser’ => ‘nextcloud’,
‘dbpassword’ => ‘9MdzCcPb1Le868VdO9iw2g7kAOAlJqq1bg-w9_oeJ-P4mT2LzfpAs’,
‘installed’ => true,
);