# Received invalid response from the server on every change

**URL:** <https://forum.mattermost.com/t/received-invalid-response-from-the-server-on-every-change/9898>\
**Category:** Troubleshooting\
**Created:** [June 4, 2020, 4:12am UTC](https://forum.mattermost.com/t/received-invalid-response-from-the-server-on-every-change/9898 "2020-06-04T04:12:33Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![KRR5](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mattermost.com/krr5/32/3899_2.png) [@KRR5](https://forum.mattermost.com/u/KRR5)\
**Post date:** [June 4, 2020, 4:12am UTC](https://forum.mattermost.com/t/received-invalid-response-from-the-server-on-every-change/9898/1 "2020-06-04T04:12:33Z")

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#### Summary

I installed Mattermost on Ubuntu 18.04, using a MYSQL database and Apache reverse proxy.

#### Steps to reproduce

Every time I save a setting I get the error “Received invalid response from the server.”

Not sure where the specific log for this is, if anyone would help with this I would appreciate it. Thanks

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**Author:** ![amy.blais](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mattermost.com/amy.blais/32/7481_2.png) [@amy.blais](https://forum.mattermost.com/u/amy.blais)\
**Post date:** [June 4, 2020, 12:23pm UTC](https://forum.mattermost.com/t/received-invalid-response-from-the-server-on-every-change/9898/2 "2020-06-04T12:23:00Z")

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@KRR5 What Mattermost server version are you on? Do you have any plugins enabled? You can find server logs at `mattermost.log` in the `logs` directory.

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**Author:** ![ahmaddanial](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mattermost.com/ahmaddanial/32/2938_2.png) [@ahmaddanial](https://forum.mattermost.com/u/ahmaddanial)\
**Post date:** [June 5, 2020, 2:29am UTC](https://forum.mattermost.com/t/received-invalid-response-from-the-server-on-every-change/9898/3 "2020-06-05T02:29:15Z")

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Hello, @KRR5

On top of the suggestion by @amy.blais, I would also like to confirm if you have the `DEBUG` log level enabled as well. Two ways of checking and ensure that it is set correctly:

- From the UI via **System Console \> Logging \> File Log Level**  

- From `config.json`:

```auto
ahmaddanial@mattermost:/opt/mattermost$ cat /opt/mattermost/config/config.json | grep -A10 "\<LogSettings\>" | grep "FileLevel"
        "FileLevel": "DEBUG",

```

Once confirmed, run `tail -f /opt/mattermost/logs/mattermost.log` on the Mattermost terminal backend to capture the log snippet specific to the time when you reproduce the issue, whenever you attempt to save a setting and share the snippet here with any sensitive information removed.

Besides that, can I also check if the problem is also reproducible when you bypass the proxy (direct connection to Mattermost)?

That will help to shed some light on this issue for a start. Thanks.

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**Author:** ![priyanshu](https://avatars.discourse-cdn.com/v4/letter/p/a9adbd/32.png) [@priyanshu](https://forum.mattermost.com/u/priyanshu)\
**Post date:** [December 20, 2023, 7:27am UTC](https://forum.mattermost.com/t/received-invalid-response-from-the-server-on-every-change/9898/5 "2023-12-20T07:27:58Z")

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Hi Amy, should the plugins be disable for the doing the changes (like removing a member from the channel).

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<div class="post-metadata">

**Author:** ![priyanshu](https://avatars.discourse-cdn.com/v4/letter/p/a9adbd/32.png) [@priyanshu](https://forum.mattermost.com/u/priyanshu)\
**Post date:** [December 20, 2023, 7:29am UTC](https://forum.mattermost.com/t/received-invalid-response-from-the-server-on-every-change/9898/6 "2023-12-20T07:29:13Z")

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Hi, I am also facing the same issue. I think log is not getting generated for this.  
Please tell how did you solve this.  
Thanks