# Server Setup but client gets unknown error 400 sync

**URL:** https://discourse.joplinapp.org/t/server-setup-but-client-gets-unknown-error-400-sync/17387
**Category:** Support
**Created:** [17 May 2021 11:49 UTC](https://discourse.joplinapp.org/t/server-setup-but-client-gets-unknown-error-400-sync/17387 "2021-05-17T11:49:49Z")
**Posts on this page:** 1
**Showing post:** 2

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### Author: ![dpoulton](https://yyz2.discourse-cdn.com/flex028/user_avatar/discourse.joplinapp.org/dpoulton/32/29723_2.png) [@dpoulton](https://discourse.joplinapp.org/u/dpoulton)
#### Post date: [18 May 2021 15:19 UTC](https://discourse.joplinapp.org/t/server-setup-but-client-gets-unknown-error-400-sync/17387/2 "2021-05-18T15:19:05Z")

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I'm just another user but may I suggest that, if you want a bit of help from Joplin, you use the [official Joplin server Docker image](https://hub.docker.com/r/joplin/server)?

**Edit:**

Apologies, just noticed that this has already been mentioned when you raised the problem in another thread.

> [@Major breaking change in coming Joplin Server 2.0](https://discourse.joplinapp.org/t/major-breaking-change-in-coming-joplin-server-2-0/17254/34):
>
> Ok then it's the wrong forum to ask because this is not the official release. By the way @florider, could you remind me what is the purpose of this release? Is it to support ARM64 or is there more to it? I don't mind that you maintain a separate release, but it would be useful to mention that it's not the official one and what are the differences with it (or overall goal). This is mainly so that people know what they are installing and perhaps go to the right place for support.

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