Can't Create New Contact after clicking on group in left column

[whisperdancer]

Describe the bug

After clicking on any group in left hand column followed by clicking create new contact causes error.

To Reproduce
Click on contacts app, then click on one of the group lists on left column. Then click New Contact button and get "Contact not found" error message on top of window and no new contact form is displayed.

Expected behavior
New contact form displayed in right column.

Actual behavior
No form displayed and error message displayed in top of window saying "contact not found"

Screenshots
If applicable, add screenshots to help explain your problem.

Server configuration

Operating system: Windows, Linux, MacOS...
Windows 10

Web server: Nginx...

Database: MariaDB

PHP version: 7.2

Nextcloud version: (see Nextcloud admin page)
15

Contacts version: (see Nextcloud apps page)
3.0 (newest update)

Updated from an older Nextcloud or fresh install:
Updated from 14.0.0.4

Signing status:

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

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 Nextcloud installation folder
  - activity: 2.8.2
  - admin_audit: 1.5.0
  - bookmarks: 0.14.3
  - calendar: 1.6.4
  - cloud_federation_api: 0.1.0
  - comments: 1.5.0
  - contacts: 3.0.0
  - dav: 1.8.0
  - federatedfilesharing: 1.5.0
  - federation: 1.5.0
  - files: 1.10.0
  - files_pdfviewer: 1.4.0
  - files_sharing: 1.7.0
  - files_texteditor: 2.7.0
  - files_trashbin: 1.5.0
  - files_versions: 1.8.0
  - files_videoplayer: 1.4.0
  - gallery: 18.2.0
  - logreader: 2.0.0
  - lookup_server_connector: 1.3.0
  - nextcloud_announcements: 1.4.0
  - notifications: 2.3.0
  - oauth2: 1.3.0
  - previewgenerator: 2.0.0
  - provisioning_api: 1.5.0
  - serverinfo: 1.5.0
  - sharebymail: 1.5.0
  - systemtags: 1.5.0
  - tasks: 0.9.8
  - theming: 1.6.0
  - twofactor_backupcodes: 1.4.1
  - twofactor_nextcloud_notification: 1.0.1
  - twofactor_totp: 2.1.0
  - updatenotification: 1.5.0
  - workflowengine: 1.5.0
Disabled:
  - accessibility
  - encryption
  - files_external
  - firstrunwizard
  - password_policy
  - support
  - survey_client
  - twofactor_rcdevsopenotp
  - user_external
  - user_ldap


**Nextcloud configuration:**

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

{
    "system": {
        "passwordsalt": "***REMOVED SENSITIVE VALUE***",
        "secret": "***REMOVED SENSITIVE VALUE***",
        "trusted_domains": [
            "localhost",
            "example.com"
        ],
        "datadirectory": "***REMOVED SENSITIVE VALUE***",
        "overwrite.cli.url": "https:\/\/example.com",
        "dbtype": "mysql",
        "version": "15.0.0.10",
        "dbname": "***REMOVED SENSITIVE VALUE***",
        "dbhost": "***REMOVED SENSITIVE VALUE***",
        "dbport": "",
        "dbtableprefix": "oc_",
        "mysql.utf8mb4": true,
        "dbuser": "***REMOVED SENSITIVE VALUE***",
        "dbpassword": "***REMOVED SENSITIVE VALUE***",
        "installed": true,
        "instanceid": "***REMOVED SENSITIVE VALUE***",
        "activity_expire_days": 14,
        "auth.bruteforce.protection.enabled": false,
        "blacklisted_files": [
            ".htaccess",
            "Thumbs.db",
            "thumbs.db"
        ],
        "cron_log": true,
        "enable_previews": true,
        "enabledPreviewProviders": [
            "OC\\Preview\\PNG",
            "OC\\Preview\\JPEG",
            "OC\\Preview\\GIF",
            "OC\\Preview\\BMP",
            "OC\\Preview\\XBitmap",
            "OC\\Preview\\Movie",
            "OC\\Preview\\PDF",
            "OC\\Preview\\MP3",
            "OC\\Preview\\TXT",
            "OC\\Preview\\MarkDown"
        ],
        "filesystem_check_changes": 0,
        "filelocking.enabled": "true",
        "htaccess.RewriteBase": "\/",
        "integrity.check.disabled": false,
        "knowledgebaseenabled": false,
        "logfile": "\/var\/nc_data\/nextcloud.log",
        "loglevel": 0,
        "logtimezone": "America\/Los_Angeles",
        "log_rotate_size": 104857600,
        "maintenance": false,
        "memcache.local": "\\OC\\Memcache\\APCu",
        "memcache.locking": "\\OC\\Memcache\\Redis",
        "overwriteprotocol": "https",
        "preview_max_x": 1024,
        "preview_max_y": 768,
        "preview_max_scale_factor": 1,
        "redis": {
            "host": "***REMOVED SENSITIVE VALUE***",
            "port": 0,
            "timeout": 0
        },
        "quota_include_external_storage": false,
        "share_folder": "\/Shares",
        "skeletondirectory": "",
        "theme": "",
        "trashbin_retention_obligation": "auto, 7",
        "updater.release.channel": "stable",
        "mail_smtpmode": "smtp",
        "mail_smtpauthtype": "LOGIN",
        "mail_from_address": "***REMOVED SENSITIVE VALUE***",
        "mail_domain": "***REMOVED SENSITIVE VALUE***",
        "mail_smtpauth": 1,
        "mail_smtphost": "***REMOVED SENSITIVE VALUE***",
        "mail_smtpport": "465",
        "mail_smtpname": "***REMOVED SENSITIVE VALUE***",
        "mail_smtppassword": "***REMOVED SENSITIVE VALUE***",
        "mail_smtpsecure": "ssl",
        "twofactor_enforced": "true",
        "twofactor_enforced_groups": [],
        "twofactor_enforced_excluded_groups": []
    }
}

or

Client configuration

Browser: Firefox Quantum 64

Operating system:
Rasperian Stretch

CardDAV-clients:

Logs

Web server error log

Insert your webserver log here

Nextcloud log

data/nextcloud.log

Insert your Nextcloud log here

Browser log

How to access your browser console (Click to expand)

Chrome

• Press either CTRL + SHIFT + J to open the “console” tab of the Developer Tools.
• Alternative method:
  1. Press either CTRL + SHIFT + I or F12 to open the Developer Tools.
  2. Click the “console” tab.

Safari

• Press CTRL + ALT + I to open the Web Inspector.
• See Chrome’s step 2. (Chrome and Safari have pretty much identical dev tools.)

IE9

1. Press F12 to open the developer tools.
2. Click the “console” tab.

Firefox

• Press CTRL + SHIFT + K to open the Web console (COMMAND + SHIFT + K on Macs).
• or, if Firebug is installed (recommended):
  1. Press F12 to open Firebug.
  2. Click on the “console” tab.

Opera

1. Press CTRL + SHIFT + I to open Dragonfly.
2. Click on the “console” tab.

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

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

[nextcloud-bot]

GitMate.io thinks possibly related issues are #29 (Can't create new contacts on master), #190 (Can't create or import contacts), #207 (Creating a contact in a group does not work), and #776 (Search only works first time).

[skjnldsv]

I can reproduce.
Will fix asap! Thanks for your issue @whisperdancer 🤗