# \[Solved\] Channels disappear after upgrading

**URL:** <https://forum.mattermost.com/t/solved-channels-disappear-after-upgrading/12511>\
**Category:** Troubleshooting\
**Created:** [November 11, 2021, 12:23pm UTC](https://forum.mattermost.com/t/solved-channels-disappear-after-upgrading/12511 "2021-11-11T12:23:51Z")\
**Posts on this page:** 1\
**Showing post:** 4

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**Author:** ![Akito](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mattermost.com/akito/32/4090_2.png) [@Akito](https://forum.mattermost.com/u/Akito)\
**Post date:** [March 12, 2022, 7:24pm UTC](https://forum.mattermost.com/t/solved-channels-disappear-after-upgrading/12511/4 "2022-03-12T19:24:19Z")

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I have the exact same symptoms after an upgrade to the currently newest available major version.

The difference is, that I have a PostgreSQL database.

Is this problem applicable to PostgreSQL?

At least the symptoms are precisely the same you experienced.

Another issue with my situation is, that I don’t know how to reproduce the log messages, displaying the error with the sidebar. I have seen them a while back, but those logs aren’t accessible, anymore.

* * *

Opened my own thread:

> [@Failed to insert record to database](https://forum.mattermost.com/t/failed-to-insert-record-to-database/13084):
>
> { "caller": "web/context.go:101", "err\_details": "resource: SidebarCategories id: userId=a...", "err\_where": "GetSidebarCategories", "http\_code": 404, "ip\_addr": "1...", "level": "debug", "method": "GET", "msg": "Failed to insert record to database.", "path": "/api/v4/users/a.../teams/a.../channels/categories", "request\_id": "a...", "timestamp": "2022-03-12 20:15:32.417 Z", "user\_id": "a..." } I experience pretty much the same symptoms as described here: [htt…](https://forum.mattermost.com/t/cant-see-channels/10441)

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