Nextcloud fails to start with drawio enabled

inex · March 2, 2026, 9:03pm

If you have the drawio app enabled on your Nextcloud instance, you might get the 500 error when trying to open your Nextcloud after a recent drawio plugin update.

It is a known issue:

github.com/jgraph/drawio-nextcloud

Updating to version 4.1.2 causes Nextcloud to crash.

opened 08:25AM - 02 Mar 26 UTC

closed 10:50AM - 02 Mar 26 UTC

PocketFR

bug needs-info

**Environment** - Nextcloud version: 32.0.6 - Draw.io app version: upgrade from …3.1.2 to 4.1.2 - draw.io server (official or self-hosted URL): https://embed.diagrams.net - Browser: Any - OS: Debian 12 **Describe the bug** A clear description of what the problem is. PHP Fatal error: Declaration of OCP\Migration\IOutput@anonymous::startProgress(int $max = 0, string $description = ''): void must be compatible with OCP\Migration\IOutput::startProgress($max = 0) in /var/www/nextcloud/apps/drawio/lib/AppInfo/Application.php on line 121 **Steps to reproduce** 1. Upgrade app from 3.1.2 to 4.1.2 2. See nextcloud crashes with error 500 3. Cry **Additional context** Any other relevant information (e.g., PHP/JS errors from the browser console or Nextcloud log). php -v : PHP 8.3.29 (cli) (built: Dec 18 2025 23:15:20) (NTS) Copyright (c) The PHP Group Zend Engine v4.3.29, Copyright (c) Zend Technologies with Zend OPcache v8.3.29, Copyright (c), by Zend Technologies

nextcloud-setup logs show the following error:

PHP Fatal error:  Declaration of OCP\Migration\IOutput@anonymous::startProgress(int $max = 0, string $description = ''): void must be compatible with OCP\Migration\IOutput::startProgress($max = 0) in /var/lib/nextcloud/store-apps/drawio/lib/AppInfo/Application.php on line 121

As both Nextcloud UI and CLI tools are crashing, the only way to disable drawio is to remove it manually. These commands should help on a SelfPrivacy instance:

mv /var/lib/nextcloud/store-apps/drawio /var/lib/nextcloud/store-apps/drawio.disabled
nextcloud-occ app:disable drawio
rm -rf /var/lib/nextcloud/store-apps/drawio.disabled
systemctl restart nextcloud-setup