Can't find any Share Option for new task lists nor can't modfiy exitsting lists

[neotecGER]

Steps to reproduce

1.Login
2.Switch to Tasks App
3.Can't find any option to share or modfiy already shared lists

Expected behaviour

Should find a share button

Actual behaviour

Can't find any option to share

Server configuration

**Operating systemUnkown, no root server:

Web server: Apache

**Database:MYSQL

**PHP version:7.3

**ownCloud version:ownCloud 10.5.0 (see ownCloud admin page)

**Tasks version:*0.9.7 * (see ownCloud apps page)

*Updated from an older ownCloud or fresh install:Updated since 7.

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 here.

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

The content of config/config.php:

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

or 

Insert your config.php content here
(Without the database password, passwordsalt and secret)

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:

CalDAV-clients:

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) ...

[rsn86]

To create a shared task list, you have to create a shared calendar first.

1.Login
2.Switch to calendar app
3.Create a calendar
4.Share the calendar
5.Switch to tasks