# WRN Waking up dead poll thread \[HttpSynReqPoll\]
**URL:** https://forum.collaboraonline.com/t/wrn-waking-up-dead-poll-thread-httpsynreqpoll/636
**Category:** Installation & Configuration
**Created:** [October 7, 2021, 3:46pm UTC](https://forum.collaboraonline.com/t/wrn-waking-up-dead-poll-thread-httpsynreqpoll/636 "2021-10-07T15:46:43Z")
**Posts on this page:** 7
**Page:** 1
### Author:  [@logart](https://forum.collaboraonline.com/u/logart)
#### Post date: [October 7, 2021, 3:46pm UTC](https://forum.collaboraonline.com/t/wrn-waking-up-dead-poll-thread-httpsynreqpoll/636/1 "2021-10-07T15:46:43Z")
I see this in the loolwsd logs when I try to view a document in my Nextcloud site
`WRN Waking up dead poll thread [HttpSynReqPoll], started: false, finished: false| ./net/Socket.hpp:680`
The nextcloud page ends up blank with no errors in the logs.
Any ideas?
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### Author:  [@sailus](https://forum.collaboraonline.com/u/sailus)
#### Post date: [October 7, 2021, 8:59pm UTC](https://forum.collaboraonline.com/t/wrn-waking-up-dead-poll-thread-httpsynreqpoll/636/2 "2021-10-07T20:59:40Z")
This seems to be an issue in the latest build(s). 6.4.11.3 works, 6.4.13.1 does not.
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### Author:  [@logart](https://forum.collaboraonline.com/u/logart)
#### Post date: [October 7, 2021, 9:27pm UTC](https://forum.collaboraonline.com/t/wrn-waking-up-dead-poll-thread-httpsynreqpoll/636/3 "2021-10-07T21:27:10Z")
Hrm, I installed via my package manager I think. Not sure how to downgrade.
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### Author:  [@bearon](https://forum.collaboraonline.com/u/bearon)
#### Post date: [October 8, 2021, 9:24am UTC](https://forum.collaboraonline.com/t/wrn-waking-up-dead-poll-thread-httpsynreqpoll/636/4 "2021-10-08T09:24:27Z")
@logart, if you open browser console, do you see any errors there?
Older versions are available as tagged Docker images: [Docker Hub](https://hub.docker.com/r/collabora/code/)
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### Author:  [@logart](https://forum.collaboraonline.com/u/logart)
#### Post date: [October 8, 2021, 2:40pm UTC](https://forum.collaboraonline.com/t/wrn-waking-up-dead-poll-thread-httpsynreqpoll/636/5 "2021-10-08T14:40:07Z")
Yes, I see this error:
```auto
bundle.js:1 Uncaught ReferenceError: Cursor is not defined
at NewClass.initialize (bundle.js:1)
at new NewClass (bundle.js:1)
at Object.L.map (bundle.js:1)
at bundle.js:1
at bundle.js:1
at bundle.js:1
```
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### Author:  [@logart](https://forum.collaboraonline.com/u/logart)
#### Post date: [October 8, 2021, 2:44pm UTC](https://forum.collaboraonline.com/t/wrn-waking-up-dead-poll-thread-httpsynreqpoll/636/6 "2021-10-08T14:44:31Z")
This seems like the same issue:
>
>
> \*\*Describe the bug\*\*
> We are running Nextcloud 20.0.12 combined with the Collabo…ra Online App 3.8.6. After upgrading our CODE server (Ubuntu 20.04) from "collaboraoffica 6.4.10.48-48" to "collaboraoffice 6.4.10.49-49", CODE seems to be broken.
>
> Whenever we try to open a document, we run into these error messages on the browser console:
>
> \`\`\`
> bundle.js:1 Uncaught ReferenceError: Cursor is not defined
> at NewClass.initialize (bundle.js:1)
> at new NewClass (bundle.js:1)
> at Object.L.map (bundle.js:1)
> at bundle.js:1
> at bundle.js:1
> at bundle.js:1
> \`\`\`
>
> Other people do seem to encounter exactly the same problem, cf.: \[1\]
>
> It does not seem to be related to Nextcloud. The same error is displayed when accessing Collabora Online from Moodle. Of course, we empty our browser cache, I even used a plain new profile. We do not find any hints in the logs, neither in Nextcloud's logs nor in Collabora's logs.
>
> \*\*To Reproduce\*\*
> Steps to reproduce the behavior:
> 1. Install the most recent version of CODE on Ubuntu 20.04.
> 2. Try to access CODE from Nextcloud or Moodle by opening an existing document (or creating a new document).
>
> \*\*Expected behavior\*\*
> The document should be opened.
>
> \*\*Actual behavior\*\*
> An empty screen is shown, as depicted in \[1\]. The browser console shows the above-mentioned JavaScript error.
>
> \*\*Desktop (please complete the following information)\*\*
> - OS: macOS 11.6
> - Browser: Chrome
> - Version: 94.0.4606.81
>
> Other browsers (Chrome on Android, Firefox on macOS, Safari on macOS, Edge on macOS) show the same problem.
>
> \*\*Additional context\*\*
> We did not have any problem with "collaboraoffice 6.4.10.48-48". We did not change anything on the Nextcloud or Moodle side.
>
> \[1\] https://help.nextcloud.com/t/cant-use-collabora-on-nextcloud/124345
---
### Author:  [@bearon](https://forum.collaboraonline.com/u/bearon)
#### Post date: [October 11, 2021, 11:33pm UTC](https://forum.collaboraonline.com/t/wrn-waking-up-dead-poll-thread-httpsynreqpoll/636/7 "2021-10-11T23:33:27Z")
This is now fixed, please update your packages.