Richdocuments error PHP Undefined index

Hello everybody. I have a problem. In Nextcloud logs error

Error PHP Undefined index: urlsrc at /…/apps/richdocuments/templates/documents.php#6
Error PHP Undefined index: token at /…/apps/richdocuments/templates/documents.php#5

Does anyone have a solution?

Nextcloud v 18.03
Collabora Online v3.5.3
PHP v 7.2.31

Does anyone have a solution?

I’ve exactly the same problem with Nextcloud 18.0.3 running inside Docker with LibreOffice Online 6.2-6 connected via Collabora App 3.7.3.

Any solution oder reason for this error known?

Same here:

Undefined index: urlsrc at /var/www/html/apps/richdocuments/templates/documents.php#6
Undefined index: token at /var/www/html/apps/richdocuments/templates/documents.php#5

same error with nextcloud 19 and latest collabora version from ubuntu20.04

Same here on alpine NC docker and collabora official docker

Same here, anyone found any solution? @jospoortvliet, @JasonBayton
NC 20.0.04
PHP 7.4.3
Ubuntu 20.04
Collabora OnLine + Dockers

Error: Undefined index: urlsrc at /var/www/nextcloud/apps/richdocuments/templates/documents.php#6

/var/www/nextcloud/apps/richdocuments/templates/documents.php - line 6:

OC\Log\ErrorHandler::onError()

/var/www/nextcloud/lib/private/Template/Base.php - line 178:

include("/var/www/ne ... p")

/var/www/nextcloud/lib/private/Template/Base.php - line 150:

OC\Template\Base->load()

/var/www/nextcloud/lib/private/legacy/OC_Template.php - line 182:

OC\Template\Base->fetchPage()

/var/www/nextcloud/lib/public/AppFramework/Http/TemplateResponse.php - line 166:

OC_Template->fetchPage()

/var/www/nextcloud/lib/private/AppFramework/Http/Dispatcher.php - line 124:

OCP\AppFramework\Http\TemplateResponse->render()

/var/www/nextcloud/lib/private/AppFramework/App.php - line 137:

OC\AppFramework\Http\Dispatcher->dispatch()

/var/www/nextcloud/lib/private/AppFramework/Routing/RouteActionHandler.php - line 47:

OC\AppFramework\App::main()

<<closure>>

OC\AppFramework\Routing\RouteActionHandler->__invoke()

/var/www/nextcloud/lib/private/Route/Router.php - line 297:

call_user_func()

/var/www/nextcloud/lib/base.php - line 1010:

OC\Route\Router->match()

/var/www/nextcloud/index.php - line 37:

OC::handleRequest()

same here
NC 20.0.8
PHP 7.4.3
Debian & Mint (two installs)
Collabora OnLine

There are a lot of such errors in the log, regardless of the version of the NC or Collabora.

Error	PHP	Error: Undefined index: token at /www/apps/richdocuments/templates/documents.php#5
Error	PHP	Error: Undefined index: urlsrc at /www/apps/richdocuments/templates/documents.php#6

Same error here. Does anybody know what we can do to fix this?
My scenario is using nginx ingress controller for all the traffic in with collabora.