# Collabora on owncloud is not loading **URL:** \ **Category:** Installation & Configuration\ **Created:** [June 20, 2025, 5:26am UTC](https://forum.collaboraonline.com/t/collabora-on-owncloud-is-not-loading/3784 "2025-06-20T05:26:37Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![clrisgluh](https://avatars.discourse-cdn.com/v4/letter/c/c68b51/32.png) [@clrisgluh](https://forum.collaboraonline.com/u/clrisgluh)\ **Post date:** [June 20, 2025, 5:26am UTC](https://forum.collaboraonline.com/t/collabora-on-owncloud-is-not-loading/3784/1 "2025-06-20T05:26:37Z")
Hello I have set up Collabora on linux running on Docker. Here is docker composer file ```auto services: collabora: image: collabora/code container_name: collabora hostname: collabora restart: unless-stopped environment: TZ: "Europe/Berlin" aliasgroup1: https://cloud.mysite.com:443 DONT_GEN_SSL_CERT: 1 dictionaries: en domain: cloud\\.mysite\\.com ports: - 9980:9980 extra_hosts: cloud.mysite.com: 192.168.1.99 cap_add: - MKNOD volumes: - /etc/letsencrypt/live/cloud.mysite.com/fullchain.pem:/etc/coolwsd/ca-chain.cert.pem - /etc/letsencrypt/live/cloud.mysite.com/privkey.pem:/etc/coolwsd/key.pem - /etc/letsencrypt/live/cloud.mysite.com/fullchain.pem:/etc/coolwsd/cert.pem ``` Docker container is running ok and https request on port 9980 are being responded with ok But when trying to open a document it starts loading infinitely and nothing happens Here are logs from docker container ```auto ERR Failed to get the realpath of [/opt/cool/child-roots/1-17b76481/tmp/sharedpresets/template] (ENOENT: No such file or directory)| common/FileUtil-unix.cpp:63 kit-00024-00024 2025-06-20 07:56:02.892160 +0300 [kit_spare_002] ERR linkOrCopy: nftw() failed for '/opt/cool/child-roots/1-17b76481/tmp/sharedpresets/template'| kit/Kit.cpp:612 kit-00025-00025 2025-06-20 07:56:02.893959 +0300 [kit_spare_003] ERR Failed to get the realpath of [/opt/cool/child-roots/1-17b76481/tmp/sharedpresets/template] (ENOENT: No such file or directory)| common/FileUtil-unix.cpp:63 kit-00025-00025 2025-06-20 07:56:02.894060 +0300 [kit_spare_003] ERR linkOrCopy: nftw() failed for '/opt/cool/child-roots/1-17b76481/tmp/sharedpresets/template'| kit/Kit.cpp:612 kit-00026-00026 2025-06-20 07:56:02.922273 +0300 [kit_spare_004] ERR Failed to get the realpath of [/opt/cool/child-roots/1-17b76481/tmp/sharedpresets/template] (ENOENT: No such file or directory)| common/FileUtil-unix.cpp:63 kit-00026-00026 2025-06-20 07:56:02.922371 +0300 [kit_spare_004] ERR linkOrCopy: nftw() failed for '/opt/cool/child-roots/1-17b76481/tmp/sharedpresets/template'| kit/Kit.cpp:612 ``` What should I do? ---
**Author:** ![darshan](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.collaboraonline.com/darshan/32/2230_2.png) [@darshan](https://forum.collaboraonline.com/u/darshan)\ **Post date:** [June 22, 2025, 8:39am UTC](https://forum.collaboraonline.com/t/collabora-on-owncloud-is-not-loading/3784/2 "2025-06-22T08:39:30Z")
Thanks for sharing the details. Based on the log messages and your setup, you’re encountering this issue: ```auto ERR linkOrCopy: nftw() failed for '/opt/cool/child-roots/.../tmp/sharedpresets/template' ``` This indicates that **Collabora is trying to link or copy from a missing path** , specifically: ```auto /opt/cool/child-roots/.../tmp/sharedpresets/template ``` This is usually related to **missing template files or misconfigured paths inside the container** , which can prevent documents from opening. Here’s how to proceed step-by-step: [https://www.collaboraonline.com/quick-tryout-owncloud-docker/](https://www.collaboraonline.com/quick-tryout-owncloud-docker/) * * * ### 1. **Check for Volume Issues or Missing Files** Make sure the Collabora image isn’t missing internal files due to: - A corrupted image - Incomplete startup - Improper permissions - Mount conflicts Run a shell inside the container and inspect the directory: ```bash docker exec -it collabora bash ls -la /opt/cool/loolwsd ls -la /opt/cool/child-roots ``` Also check: ```bash find /opt/cool -type d -name sharedpresets ``` If `sharedpresets/template` is missing **inside the container** , it’s likely an image problem. You can fix that by **pulling a fresh image** : ```bash docker pull collabora/code docker stop collabora docker rm collabora docker-compose up -d ``` * * * ### 2. **Ensure Required Packages and Template Files Exist** The `sharedpresets/template` directory should be populated at build-time. If it’s missing, it can point to: - **Incorrect permissions** in `/opt/cool` - **Uninitialized child-roots** , which can happen if the container was interrupted You can **recreate the child-root** manually: ```bash cd /opt/cool ./coolforkit --losubpath=1 --systemplate=/opt/cool/systemplate --copy --chroot ``` This simulates what `coolwsd` normally does at runtime. * * * ### 3. **Check File Permissions** Ensure the files under `/opt/cool` and `/opt/cool/child-roots/` are owned by the correct user (`cool` or whatever UID is expected in the container). If not, you can reset permissions: ```bash chown -R cool:cool /opt/cool ``` * * * ### 4. **Try a Minimal Configuration** Simplify your Docker Compose temporarily to test: ```yaml collabora: image: collabora/code:latest container_name: collabora restart: unless-stopped environment: - domain=cloud\\.mysite\\.com - aliasgroup1=https://cloud.mysite.com:443 - DONT_GEN_SSL_CERT=1 ports: - 9980:9980 ``` Then: ```bash docker-compose down docker-compose pull docker-compose up -d ``` * * * ### 5. **Verify Reverse Proxy (if using OwnCloud via HTTPS)** If the container responds to `https://cloud.mysite.com:9980/hosting/discovery` correctly, but documents fail to open, the issue might also lie in: - CSP errors (check browser DevTools Console) - Incorrect `aliasgroup1` or `domain` - Mixed content (HTTPS ↔ HTTP) - Firewall blocking outbound document requests Make sure `https://cloud.mysite.com/loleaflet/...` loads successfully in your browser. If the problem persists, please share: - Output of `ls -la /opt/cool/child-roots` inside the container - Version of `collabora/code` image (`docker inspect`) - A screenshot or log of the browser console when opening a document ---
**Author:** ![clrisgluh](https://avatars.discourse-cdn.com/v4/letter/c/c68b51/32.png) [@clrisgluh](https://forum.collaboraonline.com/u/clrisgluh)\ **Post date:** [June 23, 2025, 5:25am UTC](https://forum.collaboraonline.com/t/collabora-on-owncloud-is-not-loading/3784/3 "2025-06-23T05:25:56Z")
Thank you for answering I’ve done everything step by step 1. **Run a shell inside the container and inspect the directory:** ```auto docker exec -it collabora bash ls -la /opt/cool/loolwsd ls -la /opt/cool/child-roots ``` Result is that for /opt/cool/loolwsd ```auto Directory not found ``` For ls -la /opt/cool/child-roots there are some files 2. **Ensure Required Packages and Template Files Exist** ```auto sharedpresets/template ``` Is present 3. **Check File Permissions** File is owned by cool user 4. **Try a Minimal Configuration** Have simplified docker-conteiner accrding to your instructions and started it. Result of docker logs ```auto TRC Pre-read 14 file(s) from directory: /usr/share/coolwsd/browser/dist: cool-help.html wasm.html branding.css admin-bundle.js bundle.css branding-mobile.css bundle.js branding-tablet.css device-mobile.css cool.html global.js device-desktop.css device-tablet.css branding.js | wsd/FileServer.cpp:1352 Failed to initialize COOLWSD: File not found: /etc/coolwsd/ca-chain.cert.pem wsd-00001-00001 2025-06-23 05:18:40.579724 +0000 [coolwsd] DBG Created wakeup FDs for SocketPoll [websrv_poll], rfd: 4, wfd: 5| net/Socket.cpp:873 wsd-00001-00001 2025-06-23 05:18:40.579757 +0000 [coolwsd] DBG New SocketPoll[this 0x986d6c0, thread[name websrv_poll, id[owner 0x7f5d2e2ce880, caller 0x7f5d2e2ce880]]]| net/Socket.cpp:338 wsd-00001-00001 2025-06-23 05:18:40.579933 +0000 [coolwsd] TRC Initialize StorageConnectionManager| wsd/COOLWSD.cpp:2183 wsd-00001-00001 2025-06-23 05:18:40.581514 +0000 [coolwsd] FTL Failed to initialize COOLWSD: File not found: /etc/coolwsd/ca-chain.cert.pem| wsd/COOLWSD.hpp:263 File not found: /etc/coolwsd/ca-chain.cert.pem wsd-00001-00010 2025-06-23 05:18:40.580131 +0000 [asyncdns] INF Thread 10 (7f5d2deee6c0) of process 1 formerly unnamed is now called [asyncdns]| common/Util.cpp:297 -00001 2025-06-23 05:18:40.582495 +0000 [coolwsd] SIG Fatal signal received: SIGABRT code: 18446744073709551610 for address: 0x3e900000001 ``` Here seem to be no errors But server seems not to recognise collabora at all because it was started without ssl ceritficat but my owncloud is started with ssl and it does not recognize it at all. By url `cloud.mysite.com:9980` it is not loading it all 1. **Verify Reverse Proxy (if using OwnCloud via HTTPS)** Server is responsing to `https://cloud.mysite.com:9980/hosting/discovery` but document faild to open ```auto https://cloud.mysite.com/loleaflet/... ``` is not opening at all nor ```auto https://cloud.mysite.com/loleaflet ``` ---
**Author:** ![clrisgluh](https://avatars.discourse-cdn.com/v4/letter/c/c68b51/32.png) [@clrisgluh](https://forum.collaboraonline.com/u/clrisgluh)\ **Post date:** [June 23, 2025, 5:30am UTC](https://forum.collaboraonline.com/t/collabora-on-owncloud-is-not-loading/3784/4 "2025-06-23T05:30:17Z")
Here are my output of `ls -la /opt/cool/child-roots` ```auto drwxr-xr-x 3 cool cool 4096 Jun 20 01:39 . drwxr-xr-x 7 988 988 4096 Jun 20 01:39 .. drwxr-xr-x 3 cool cool 4096 Jun 20 01:39 1-d6668934 ``` Version of `collabora/code` ```auto "com.docker.compose.version": "1.29.2", "version": "25.04.3.1" ``` Browser console showing nothing when trying to open document ---
**Author:** ![clrisgluh](https://avatars.discourse-cdn.com/v4/letter/c/c68b51/32.png) [@clrisgluh](https://forum.collaboraonline.com/u/clrisgluh)\ **Post date:** [June 23, 2025, 5:52am UTC](https://forum.collaboraonline.com/t/collabora-on-owncloud-is-not-loading/3784/5 "2025-06-23T05:52:26Z")
Oh sorry here are some browser logs by trying to load document ![Screen](https://europe1.discourse-cdn.com/flex013/uploads/collaboraonline/original/2X/f/f6897532529ebf03f9b99b16689b11bca033ef70.png) ---
**Author:** ![clrisgluh](https://avatars.discourse-cdn.com/v4/letter/c/c68b51/32.png) [@clrisgluh](https://forum.collaboraonline.com/u/clrisgluh)\ **Post date:** [June 23, 2025, 6:15am UTC](https://forum.collaboraonline.com/t/collabora-on-owncloud-is-not-loading/3784/6 "2025-06-23T06:15:11Z")
Another error in borwser log ![Screen](https://europe1.discourse-cdn.com/flex013/uploads/collaboraonline/original/2X/e/ef483b7b6978cdefd6bf46feb72d417ad4ffd179.png)