Error "Unable to update contact" when creating a new contact

[TimoWilken]

Describe the bug

I cannot create new contacts; neither in the web UI, nor via DAV using my Android phone's contacts app.

Steps to reproduce

1. Open Nextcloud Contacts (https://<server URL>/apps/contacts/)
2. Click "+ New contact"
3. Add any info (e.g. name, phone number)
4. Open browser console on Network tab
5. Click "Save"
6. See red popup in top right corner saying "Unable to update contact"
7. Observe HTTP 500 response (see details below).

Expected behavior

The contact should be created successfully and I should not see an error.

Actual behavior

The HTTP PUT request to create the contact to https://<server URL>/remote.php/dav/addressbooks/users/<user>/contacts/<UUID>.vcf gets an HTTP 500 response with the following content:

<?xml version="1.0" encoding="utf-8"?>
<d:error xmlns:d="DAV:" xmlns:s="http://sabredav.org/ns">
  <s:exception>Error</s:exception>
  <s:message>Call to undefined method OC\DB\QueryBuilder\QueryBuilder::execute()</s:message>
</d:error>

If I create a contact using DAV, I also see a HTTP 500 response in my web server logs, and the Nextcloud log contains the following entry:

Level: Error
Application: webdav
Message: Error Call to undefined method OC\DB\QueryBuilder\QueryBuilder::execute()
Time: 4 Mar 2026, 23:05:34

Contact version

8.4.0

Operating system

Linux (GNU Guix)

PHP engine version

Other

Web server

Nginx

Database

PostgreSQL

Additional info

Nextcloud Hub 26 Winter (33.0.0); PHP 8.5.2.

PHP extensions installed: apcu.so; dba.so; imagick.so; redis.so; plus built-in modules such as --with-pdo-pgsql and --with-pgsql.

[SebastianKrupinski]

Hi @TimoWilken

Can you tell me if you have the maps app enabled?

[TimoWilken]

Yes I do have the Maps app enabled in Nextcloud, version 1.6.0. Is this a problem?

[TimoWilken]

I've disabled the Maps app; the PUT request to create a contact now succeeds with an HTTP 201 response.

[GVodyanov]

I wasn't able to reproduce this just by having the maps app installed, but there might be some other conditions

[SebastianKrupinski]

@GVodyanov you need to have the maps app installed

[SebastianKrupinski]

@TimoWilken

Yes there is a issue with the maps app.

nextcloud/maps#1521

[SebastianKrupinski]

@TimoWilken

I'm going to close the ticket, since the issue is not with the contacts app.

[GVodyanov]

@GVodyanov you need to have the maps app installed

Yes yes of course I had it installed @SebastianKrupinski