[BUG] Brainarr plugin fails to load on Hotio Lidarr (.NET 8 / Unraid 7.2.0-rc.2)

[martinkeat]

Is there an existing issue for this?

• I have searched the existing issues

Current Behavior

Lidarr logs show a TypeLoadException and the plugin never appears in the UI.

Expected Behavior

Brainarr should appear under Settings → Plugins and Settings → Lists → Add → Brainarr.

Steps To Reproduce

Pull the image:
docker pull ghcr.io/hotio/lidarr:pr-plugins

Create plugin directory:
mkdir -p /mnt/user/appdata/lidarr/plugins/RicherTunes/Brainarr

Download and extract Brainarr plugin:
cd /mnt/user/appdata/lidarr/plugins/RicherTunes/Brainarr
wget -O Brainarr.zip https://github.com/RicherTunes/Brainarr/releases/download/v1.3.1/Brainarr-v1.3.1.net6.0.zip

unzip -o Brainarr.zip && rm Brainarr.zip
chown -R nobody:users /mnt/user/appdata/lidarr/plugins/RicherTunes/Brainarr
chmod -R 755 /mnt/user/appdata/lidarr/plugins/RicherTunes/Brainarr

Restart Lidarr:
docker restart lidarr

After restart, Brainarr fails to load and does not appear in the UI.

lidarr.debug.txt
lidarr.txt

Environment

Host OS: Unraid OS 7.2.0-rc.2
Brainarr Version: Brainarr v1.3.1
Container Image: ghcr.io/hotio/lidarr:pr-plugins
Alternate Tested Image: ghcr.io/hotio/lidarr:pr-plugins-2.14.2.4786
Lidarr Version: 3.0.0.4856
Package Version: pr-3dcff62 by hotio
.NET Runtime: 8.0.12
Database: SQLite 3.50.4
AppData Path: /mnt/user/appdata/lidarr (mounted as /config)
Plugin Path: /mnt/user/appdata/lidarr/plugins/RicherTunes/Brainarr
Plugin Source: https://github.com/RicherTunes/Brainarr/releases/download/v1.3.1/Brainarr-v1.3.1.net6.0.zip

Network Mode: br0 – Static IP 10.0.10.12
PUID/PGID: 99 / 100
Privileged: On

CPU architecture

x86-64

Docker creation

Steps to Reproduce:

Pull the image:
docker pull ghcr.io/hotio/lidarr:pr-plugins

Create plugin directory:
mkdir -p /mnt/user/appdata/lidarr/plugins/RicherTunes/Brainarr

Download and extract Brainarr plugin:
cd /mnt/user/appdata/lidarr/plugins/RicherTunes/Brainarr
wget -O Brainarr.zip https://github.com/RicherTunes/Brainarr/releases/download/v1.3.1/Brainarr-v1.3.1.net6.0.zip

unzip -o Brainarr.zip && rm Brainarr.zip
chown -R nobody:users /mnt/user/appdata/lidarr/plugins/RicherTunes/Brainarr
chmod -R 755 /mnt/user/appdata/lidarr/plugins/RicherTunes/Brainarr

Restart Lidarr:
docker restart lidarr

After restart, Brainarr fails to load and does not appear in the UI.

Container logs

Attached above

Summary:
Brainarr fails to load on Hotio’s Lidarr Docker build even though it shows as successfully installed. Lidarr reports a System.TypeLoadException related to the Brainarr plugin’s Test() method. The plugin does not appear in Settings → Plugins or Settings → Lists → Add.

This occurs on both ghcr.io/hotio/lidarr:pr-plugins and ghcr.io/hotio/lidarr:pr-plugins-2.14.2.4786.

Environment:
Host OS: Unraid OS 7.2.0-rc.2
Container Image: ghcr.io/hotio/lidarr:pr-plugins
Alternate Tested Image: ghcr.io/hotio/lidarr:pr-plugins-2.14.2.4786
Lidarr Version: 3.0.0.4856
Package Version: pr-3dcff62 by hotio
.NET Runtime: 8.0.12
Database: SQLite 3.50.4
AppData Path: /mnt/user/appdata/lidarr (mounted as /config)
Plugin Path: /mnt/user/appdata/lidarr/plugins/RicherTunes/Brainarr
Plugin Source: https://github.com/RicherTunes/Brainarr/releases/download/v1.3.1/Brainarr-v1.3.1.net6.0.zip

Network Mode: br0 – Static IP 10.0.10.12
PUID/PGID: 99 / 100
Privileged: On

Steps to Reproduce:

Pull the image:
docker pull ghcr.io/hotio/lidarr:pr-plugins

Create plugin directory:
mkdir -p /mnt/user/appdata/lidarr/plugins/RicherTunes/Brainarr

Download and extract Brainarr plugin:
cd /mnt/user/appdata/lidarr/plugins/RicherTunes/Brainarr
wget -O Brainarr.zip https://github.com/RicherTunes/Brainarr/releases/download/v1.3.1/Brainarr-v1.3.1.net6.0.zip

unzip -o Brainarr.zip && rm Brainarr.zip
chown -R nobody:users /mnt/user/appdata/lidarr/plugins/RicherTunes/Brainarr
chmod -R 755 /mnt/user/appdata/lidarr/plugins/RicherTunes/Brainarr

Restart Lidarr:
docker restart lidarr

After restart, Brainarr fails to load and does not appear in the UI.

Expected Behavior:
Brainarr should appear under Settings → Plugins and Settings → Lists → Add → Brainarr.

Actual Behavior:
Lidarr logs show a TypeLoadException and the plugin never appears in the UI.

Relevant Log Snippets:
System.TypeLoadException: Method 'Test' in type 'NzbDrone.Core.ImportLists.Brainarr.Brainarr' from assembly 'Lidarr.Plugin.Brainarr, Version=1.3.1.0, Culture=neutral, PublicKeyToken=null' does not have an implementation.
[Info] InstallPluginService: Plugin [RicherTunes/Brainarr] v1.3.1 installed. Please restart Lidarr.

Full logs attached from lidarr.txt and lidarr.debug.txt.

What Has Been Tried:

Verified plugin path and permissions

Reinstalled plugin multiple times

Restarted container multiple times

Tested both pr-plugins and pr-plugins-2.14.2.4786

Verified correct .NET version (8.0.12)

Confirmed plugin structure and version (v1.3.1 for .NET 6)

[github-actions]

Thanks for opening your first issue here! Be sure to follow the relevant issue templates, or risk having this issue marked as invalid.

[aptalca]

You do know we're not hotio, right?

[martinkeat]

Hi. Sorry yes I do. My bad. I also tried the linux server version with the same result. Forgot to modify the ticket for this thread. However you seem to have marked it as done before I got a chance to respond.