From 9865e92cea111ae4e1e90dc1334217adb35171f3 Mon Sep 17 00:00:00 2001
From: Bogdan <mynameisbogdan@users.noreply.github.com>
Date: Mon, 25 Dec 2023 01:51:53 +0200
Subject: [PATCH] Add error message for invalid Root Folder in Ebook Tag
 Service

---
 src/NzbDrone.Core/MediaFiles/EbookTagService.cs | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/NzbDrone.Core/MediaFiles/EbookTagService.cs b/src/NzbDrone.Core/MediaFiles/EbookTagService.cs
index f52baa14f..df057a858 100644
--- a/src/NzbDrone.Core/MediaFiles/EbookTagService.cs
+++ b/src/NzbDrone.Core/MediaFiles/EbookTagService.cs
@@ -175,6 +175,12 @@ namespace NzbDrone.Core.MediaFiles
             }
 
             var rootFolder = _rootFolderService.GetBestRootFolder(file.Path);
+
+            if (rootFolder == null)
+            {
+                throw new Exception($"File '{file.Path}' is not in a root folder.");
+            }
+
             _calibre.SetFields(file, rootFolder.CalibreSettings, updateCover, embedMetadata);
         }