# CODE in Docker returns blank page **URL:** \ **Category:** đź“„ Office\ **Tags:** collabora-online\ **Created:** [February 8, 2022, 2:20pm UTC](https://help.nextcloud.com/t/code-in-docker-returns-blank-page/133393 "2022-02-08T14:20:13Z")\ **Posts on this page:** 1\ **Showing post:** 6
**Author:** ![wwe](https://help.nextcloud.com/user_avatar/help.nextcloud.com/wwe/32/72963_2.png) [@wwe](https://help.nextcloud.com/u/wwe)\ **Post date:** [February 9, 2022, 8:01pm UTC](https://help.nextcloud.com/t/code-in-docker-returns-blank-page/133393/6 "2022-02-09T20:01:40Z")
that’s true, each component needs valid (TLS) connection to the exposed URL of another: > [@Collabora CODE Server on docker fails to load document](https://help.nextcloud.com/t/collabora-code-server-on-docker-fails-to-load-document/129941/4): > > I assume you still have some issues in tern which component communicates how with others. My setup looks like this: [image] each URL is https TLS termination is done at reverse proxy, communication behind reverse proxy is plain http connections between Nextcloud and Collabora container flow through reverse proxy (because direct connection has no TLS) Maybe there are other way to setup but you should keep in mind how the access works: once the the client access a a file and wants to edit is… helpful references: > [@Docker Compose for Nextcloud + Collabora + Traefik?](https://help.nextcloud.com/t/docker-compose-for-nextcloud-collabora-traefik/127733): > > Does anyone have a robust working Docker compose solution for these together? I consider myself a reasonably advanced linux user/admin, but have had a horrible time trying to setup Collabora with Nextclod behind Traefik. I have replicated so many examples from others online, I have downgraded the collabora container, I have played with the WOPI host and network access hosts in XML config to open up access to everyone, out of desperation. And more. Even messing with TLS SNI. It is literally the … > [@PSA: How to get collabora working on nextcloud 23!](https://help.nextcloud.com/t/psa-how-to-get-collabora-working-on-nextcloud-23/128511): > > The developers of nextcloud 23 decided to release a non-working richdocuments app (v5.0.0). No idea why. The richdocuments developer was aware of this problem before the official release of 23. Plenty of time to pull the app and prevent this. To fix collabora (on a fresh install): Download nextcloud 23; unzip; go into /var/www/nextcloud/apps/ download [https://github.com/nextcloud/richdocuments/releases/download/v4.1.2/richdocuments.tar.gz](https://github.com/nextcloud/richdocuments/releases/download/v4.1.2/richdocuments.tar.gz) tar xf richdocuments tar.gz chown -R www-data:www-… > [@NC23: How to enable Nextcloud Office](https://help.nextcloud.com/t/nc23-how-to-enable-nextcloud-office/128267): > > Hi together, just upgraded vom NC22 und NC23 … now I’m looking for the switch where you turn “Nextcloud Office” on slight_smile Cheers, Andreas > [@Docker NC21 collabora issue](https://help.nextcloud.com/t/docker-nc21-collabora-issue/119404): > > I had a docker installation with NC21 (from NC19) with traefik and collabora as extra container. After upgrade to latest collabora image collabora/code:6.4.10.1 I experienced issue with error “Failed to read document from storage. Please contact your storage server ([cloud.example.com](http://cloud.example.com)) administrator.” as described here triying to figure out if this is a collabora issue I went back to older collabora version 6.4.0.6 (unfortunately I used “latest” tag initially so I don’t really know which one… --- _[View the full topic](https://help.nextcloud.com/t/code-in-docker-returns-blank-page/133393)._