3 files changed, 11 insertions, 7 deletions
diff --git a/Jellyfin.Api/Controllers/DisplayPreferencesController.cs b/Jellyfin.Api/Controllers/DisplayPreferencesController.cs
index 14fd7eb3c..67cceb4a8 100644
--- a/Jellyfin.Api/Controllers/DisplayPreferencesController.cs
+++ b/Jellyfin.Api/Controllers/DisplayPreferencesController.cs
@@ -178,7 +178,7 @@ namespace Jellyfin.Api.Controllers
 
             foreach (var key in displayPreferences.CustomPrefs.Keys.Where(key => key.StartsWith("homesection", StringComparison.OrdinalIgnoreCase)))
             {
-                var order = int.Parse(key.AsSpan().Slice("homesection".Length), NumberStyles.Any, CultureInfo.InvariantCulture);
+                var order = int.Parse(key.AsSpan().Slice("homesection".Length), CultureInfo.InvariantCulture);
                 if (!Enum.TryParse<HomeSectionType>(displayPreferences.CustomPrefs[key], true, out var type))
                 {
                     type = order < 8 ? defaults[order] : HomeSectionType.None;
diff --git a/Jellyfin.Api/Controllers/ImageController.cs b/Jellyfin.Api/Controllers/ImageController.cs
index 260b9536e..49342ad5c 100644
--- a/Jellyfin.Api/Controllers/ImageController.cs
+++ b/Jellyfin.Api/Controllers/ImageController.cs
@@ -28,6 +28,7 @@ using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.Http;
 using Microsoft.AspNetCore.Mvc;
 using Microsoft.Extensions.Logging;
+using Microsoft.Extensions.Primitives;
 using Microsoft.Net.Http.Headers;
 
 namespace Jellyfin.Api.Controllers
@@ -2026,8 +2027,13 @@ namespace Jellyfin.Api.Controllers
             }
 
             var acceptParam = Request.Query[HeaderNames.Accept];
+            if (StringValues.IsNullOrEmpty(acceptParam))
+            {
+                return Array.Empty<ImageFormat>();
+            }
 
-            var supportsWebP = SupportsFormat(supportedFormats, acceptParam, ImageFormat.Webp, false);
+            // Can't be null, checked above
+            var supportsWebP = SupportsFormat(supportedFormats, acceptParam!, ImageFormat.Webp, false);
 
             if (!supportsWebP)
             {
@@ -2049,7 +2055,8 @@ namespace Jellyfin.Api.Controllers
             formats.Add(ImageFormat.Jpg);
             formats.Add(ImageFormat.Png);
 
-            if (SupportsFormat(supportedFormats, acceptParam, ImageFormat.Gif, true))
+            // Can't be null, checked above
+            if (SupportsFormat(supportedFormats, acceptParam!, ImageFormat.Gif, true))
             {
                 formats.Add(ImageFormat.Gif);
             }
diff --git a/Jellyfin.Api/Controllers/SessionController.cs b/Jellyfin.Api/Controllers/SessionController.cs
index 9218c3b5c..25f930135 100644
--- a/Jellyfin.Api/Controllers/SessionController.cs
+++ b/Jellyfin.Api/Controllers/SessionController.cs
@@ -294,10 +294,7 @@ namespace Jellyfin.Api.Controllers
         {
             var currentSession = await RequestHelpers.GetSession(_sessionManager, _userManager, HttpContext).ConfigureAwait(false);
 
-            if (command is null)
-            {
-                throw new ArgumentException("Request body may not be null");
-            }
+            ArgumentNullException.ThrowIfNull(command);
 
             command.ControllingUserId = currentSession.UserId;