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# Grafana - Conflicting Values set Error

You're getting this error because your system has **conflicting** `Signed-By` **values** for the same APT source (`[https://apt.grafana.com`).](https://apt.grafana.com`).) That means two different keyring files are being referenced in your Grafana APT source entries.

```
E: Conflicting values set for option Signed-By regarding source [https://apt.grafana.com/](https://apt.grafana.com/) stable: /etc/apt/keyrings/grafana.gpg != /usr/share/keyrings/grafana.key E: The list of sources could not be read.
```
![](https://ggcircuit.atlassian.net/wiki/download/attachments/15863433/image-20250602-125837.png?version=1&modificationDate=1748869120242&cacheVersion=1&api=v2)

You’ll usually see this error under Software Updates tab in Debian Control Panel.  
Also you’ll see this error when running : 

```
ggrock-linux-configurator
```
![](https://ggcircuit.atlassian.net/wiki/download/attachments/15863433/image-20250602-125910.png?version=1&modificationDate=1748869152867&cacheVersion=1&api=v2)

How to Fix the Issue    
Step 1: Locate the conflicting APT entries  
Run the following to find where `[https://apt.grafana.com`](https://apt.grafana.com`) is defined:

```
bash
grep -r "[https://apt.grafana.com"](https://apt.grafana.com") /etc/apt/
```

You’ll likely see multiple files like:

```
swift
/etc/apt/sources.list.d/grafana.list
/etc/apt/sources.list
```

Check if any of those entries have `signed-by=/etc/apt/keyrings/grafana.gpg` and another has `signed-by=/usr/share/keyrings/grafana.key`.

Step 2:  
Remove the extra keyring files leaving only sources.list

Step 3:

Another run of the search command should return only 1 entry from /etc/apt for grafana:

```
root@ggrock:~# grep -r "[https://apt.grafana.com"](https://apt.grafana.com") /etc/apt
/etc/apt/sources.list:deb [signed-by=/etc/apt/keyrings/grafana.gpg] [https://apt.grafana.com](https://apt.grafana.com) stable main
```