EuroOffice firebase/php-jwt dependency conflicts with Nextcloud Whiteboard (Hetzner Storageshare)

[jschmdt]

Version: Nextcloud Hub 26 Winter (33.0.6)
Hosting: Hetzner Storageshare

Whiteboard fails when the EuroOffice Nextcloud app is installed and enabled.

I originally reported it in the Nextcloud Whiteboard repository:
nextcloud/whiteboard#1307

Symptoms

With EuroOffice enabled:

• Whiteboard files cannot be opened or edited correctly.
• The Whiteboard admin settings page returns an Internal Server Error.
• Nextcloud logs contain:

DomainException: Provided key is too short

The stack trace shows that Whiteboard's JWT code is using the JWT implementation bundled by EuroOffice:

/custom_apps/eurooffice/vendor/firebase/php-jwt/src/JWT.php
/custom_apps/whiteboard/lib/Service/JWTService.php
/custom_apps/whiteboard/lib/Settings/Admin.php

In particular:

Firebase\JWT\JWT::encode(...)
OCA\Whiteboard\Service\JWTService->generateJWTFromPayload(...)

This suggests that EuroOffice's bundled firebase/php-jwt dependency is being loaded in a way that conflicts with the dependency expected by Whiteboard.

Reproduction / comparison

• ❌ EuroOffice (eurooffice) enabled → Whiteboard admin page throws an Internal Server Error and Whiteboards cannot be edited.
• ✅ EuroOffice disabled → Whiteboard works.
• ✅ Collabora-based Nextcloud Office (richdocuments) enabled instead → Whiteboard works normally.

The affected report was using EuroOffice 11.0.4.

Expected behavior

EuroOffice should not override or interfere with PHP dependencies used by other Nextcloud apps.

Suspected cause

There appears to be a dependency/autoload conflict involving EuroOffice's bundled firebase/php-jwt package.

Whiteboard calls its own JWT service, but the stack trace enters:

/custom_apps/eurooffice/vendor/firebase/php-jwt/src/JWT.php

and fails with:

Provided key is too short

Related issue

Nextcloud Whiteboard issue:
nextcloud/whiteboard#1307

[KOEWADO]

Same issue here but NC is OnPremise

[ichdasich]

Just hit the same problem. However, how i noticed is that the documents for nextcloud-office no longer saved after editing. Disabling the whiteboard app also fixed this (and prior i confirmed to also see the issue with the whiteboard admin page not loading).