Update troubles using the updater

Sorry, was not allowed to post in the HELP area.

Please help us by providing the following info. Before posting please also check the pinned "Known issues" threads and make sure that you're running the latest available version for your oC release: https://owncloud.org/changelog/

Steps to reproduce
1. On version 9
2. Click update
3. Results e e
e [UnexpectedValueException] e
e Could not parse a response for config:list. Please check if the current shell user can run occ command. Raw output: e
e Not allowed e
e e

Expected behaviour
Tell us what should happen
Should update and remove snag screen up at top.
Actual behaviour
Tell us what happens instead
Look above at the error
Server configuration
Operating system:CentOS
Web server:Apache
Database:SQL
PHP version: 7
ownCloud version (see ownCloud admin page): 9
Updated from an older ownCloud or fresh install:
Special configuration (external storage, external authentication, reverse proxy, server-side-encryption):

ownCloud log (data/owncloud.log)
e e
e [UnexpectedValueException] e
e Could not parse a response for config:list. Please check if the current shell user can run occ command. Raw output: e
e Not allowed e
e e
Please paste possible errors in the following code block, see https://central.owncloud.org/t/how-to-find-webserver-or-oc-logfile-enable-php-logfile/808 for more info

Integrity status for oC9+

Login as admin user into your ownCloud and access
http://example.com/index.php/settings/integrity/failed
No errors have been found.
paste the results here.

Threre is no problem right now, but is there a current document that would tell us how to upgrade to the latest version using the updater, which really never works.

Have a look at [1] which contains infos about that. In general its always recommended to not use the updater app (which is known to be broken since years) and just do a manual update / upgrade (see doc.owncloud.org). With that you're on the safe side and you're mostly won't face any issues during updates and upgrades.

[1]