Aktualisierung auf 10.14.0 schlägt fehl

Hallo OC Community,

hab ein Problem bei dem ich einmal dringend Euren Rat brauche.

Ich betreibe eine OC Installation bei meinem Hoster All-inkl.

Ich wollte jetzt, wie schon oft zuvor, meine OC Installation auf die vorgeschlagenen neuste Version aktualisieren.

Leider lässt sich das Update nicht installieren (Fehlermeldung weiter unten im Text) bzw. bricht die Installation ab.

Unglücklicherweise kann ich mich jetzt auch nicht mehr anmelden!

Da ich recht neu in dem Umgang mit OC bin wäre es toll wenn ihr mir Tipps geben könnten wie ich den Fehler beheben kann oder was ich tun muss um mich wieder anmelden zu können .

Hier die Fehlermeldung:
Aktualisierung auf 10.14.0
OC\RepairException: Upgrade is not possible

Reparaturwarnung: Market app is unavailable for updating of apps. Please update manually
Reparaturwarnung: You have incompatible or missing apps enabled that could not be found or updated via the marketplace.
Reparaturwarnung: Please install or update the following apps manually or disable them with: occ app:disable tasks

Detaillierte Fehlermeldungen
Update vorbereiten
Log-Level auf “debug” gesetzt
Wartungsmodus eingeschaltet
Reparaturwarnung: Market app is unavailable for updating of apps. Please update manually
Reparaturwarnung: You have incompatible or missing apps enabled that could not be found or updated via the marketplace.
Reparaturwarnung: Please install or update the following apps manually or disable them with: occ app:disable tasks
Reparaturwarnung: For manually updating, see
OC\RepairException: Upgrade is not possible

Vielen Dank für die Hilfe!

Steps to reproduce

Expected behaviour

Tell us what should happen

Actual behaviour

Tell us what happens instead

Server configuration

Operating system:

Web server:

Database:

PHP version:

ownCloud version: (see ownCloud admin page)

Updated from an older ownCloud or fresh install:

Where did you install ownCloud from:

Signing status (ownCloud 9.0 and above):

Login as admin user into your ownCloud and access 
http://example.com/index.php/settings/integrity/failed 
paste the results into https://gist.github.com/ and puth the link here.

The content of config/config.php:

Log in to the web-UI with an administrator account and click on
'admin' -> 'Generate Config Report' -> 'Download ownCloud config report'
This report includes the config.php settings, the list of activated apps
and other details in a well sanitized form.

or 

If you have access to your command line run e.g.:
sudo -u www-data php occ config:list system
from within your ownCloud installation folder

*ATTENTION:* Do not post your config.php file in public as is. Please use one of the above
methods whenever possible. Both, the generated reports from the web-ui and from occ config:list
consistently remove sensitive data. You still may want to review the report before sending.
If done manually then it is critical for your own privacy to dilligently
remove *all* host names, passwords, usernames, salts and other credentials before posting.
You should assume that attackers find such information and will use them against your systems.

List of activated apps:

If you have access to your command line run e.g.:
sudo -u www-data php occ app:list
from within your ownCloud installation folder.

Are you using external storage, if yes which one: local/smb/sftp/…

Are you using encryption: yes/no

Are you using an external user-backend, if yes which one: LDAP/ActiveDirectory/Webdav/…

LDAP configuration (delete this part if not used)

With access to your command line run e.g.:
sudo -u www-data php occ ldap:show-config
from within your ownCloud installation folder

Without access to your command line download the data/owncloud.db to your local
computer or access your SQL server remotely and run the select query:
SELECT * FROM `oc_appconfig` WHERE `appid` = 'user_ldap';


Eventually replace sensitive data as the name/IP-address of your LDAP server or groups.

Client configuration

Browser:

Operating system:

Logs

Web server error log

Insert your webserver log here

ownCloud log (data/owncloud.log)

Insert your ownCloud log here

Browser log

Insert your browser log here, this could for example include:

a) The javascript console log
b) The network log 
c) ...

Hast du die gelöscht oder deaktiviert?