4 files changed, 19 insertions, 8 deletions
diff --git a/Jellyfin.Server/CoreAppHost.cs b/Jellyfin.Server/CoreAppHost.cs
index ed5968ad6..1d5313c13 100644
--- a/Jellyfin.Server/CoreAppHost.cs
+++ b/Jellyfin.Server/CoreAppHost.cs
@@ -4,7 +4,6 @@ using Emby.Server.Implementations;
 using MediaBrowser.Common.Net;
 using MediaBrowser.Controller.Drawing;
 using MediaBrowser.Model.IO;
-using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.Logging;
 
 namespace Jellyfin.Server
diff --git a/Jellyfin.Server/Jellyfin.Server.csproj b/Jellyfin.Server/Jellyfin.Server.csproj
index bc18f11fd..02ae202b4 100644
--- a/Jellyfin.Server/Jellyfin.Server.csproj
+++ b/Jellyfin.Server/Jellyfin.Server.csproj
@@ -36,8 +36,8 @@
 
   <ItemGroup>
     <PackageReference Include="CommandLineParser" Version="2.7.82" />
-    <PackageReference Include="Microsoft.Extensions.Configuration.EnvironmentVariables" Version="3.1.1" />
-    <PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="3.1.1" />
+    <PackageReference Include="Microsoft.Extensions.Configuration.EnvironmentVariables" Version="3.1.3" />
+    <PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="3.1.3" />
     <PackageReference Include="Serilog.AspNetCore" Version="3.2.0" />
     <PackageReference Include="Serilog.Enrichers.Thread" Version="3.1.0" />
     <PackageReference Include="Serilog.Settings.Configuration" Version="3.1.0" />
diff --git a/Jellyfin.Server/Migrations/Routines/DisableTranscodingThrottling.cs b/Jellyfin.Server/Migrations/Routines/DisableTranscodingThrottling.cs
index 673f0e415..6f8e4a8ff 100644
--- a/Jellyfin.Server/Migrations/Routines/DisableTranscodingThrottling.cs
+++ b/Jellyfin.Server/Migrations/Routines/DisableTranscodingThrottling.cs
@@ -1,8 +1,6 @@
 using System;
-using System.IO;
 using MediaBrowser.Common.Configuration;
 using MediaBrowser.Model.Configuration;
-using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.Logging;
 
 namespace Jellyfin.Server.Migrations.Routines
diff --git a/Jellyfin.Server/Program.cs b/Jellyfin.Server/Program.cs
index d9ca14136..5766a9dc3 100644
--- a/Jellyfin.Server/Program.cs
+++ b/Jellyfin.Server/Program.cs
@@ -1,6 +1,5 @@
 using System;
 using System.Diagnostics;
-using System.Globalization;
 using System.IO;
 using System.Linq;
 using System.Net;
@@ -20,6 +19,7 @@ using Jellyfin.Drawing.Skia;
 using MediaBrowser.Common.Configuration;
 using MediaBrowser.Controller.Drawing;
 using MediaBrowser.Controller.Extensions;
+using MediaBrowser.WebDashboard.Api;
 using Microsoft.AspNetCore.Hosting;
 using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.DependencyInjection;
@@ -27,7 +27,6 @@ using Microsoft.Extensions.DependencyInjection.Extensions;
 using Microsoft.Extensions.Logging;
 using Microsoft.Extensions.Logging.Abstractions;
 using Serilog;
-using Serilog.Events;
 using Serilog.Extensions.Logging;
 using SQLitePCL;
 using ILogger = Microsoft.Extensions.Logging.ILogger;
@@ -185,8 +184,23 @@ namespace Jellyfin.Server
                 new ManagedFileSystem(_loggerFactory.CreateLogger<ManagedFileSystem>(), appPaths),
                 GetImageEncoder(appPaths),
                 new NetworkManager(_loggerFactory.CreateLogger<NetworkManager>()));
+
             try
             {
+                // If hosting the web client, validate the client content path
+                if (startupConfig.HostWebClient())
+                {
+                    string webContentPath = DashboardService.GetDashboardUIPath(startupConfig, appHost.ServerConfigurationManager);
+                    if (!Directory.Exists(webContentPath) || Directory.GetFiles(webContentPath).Length == 0)
+                    {
+                        throw new InvalidOperationException(
+                            "The server is expected to host the web client, but the provided content directory is either " +
+                            $"invalid or empty: {webContentPath}. If you do not want to host the web client with the " +
+                            "server, you may set the '--nowebclient' command line flag, or set" +
+                            $"'{MediaBrowser.Controller.Extensions.ConfigurationExtensions.HostWebClientKey}=false' in your config settings.");
+                    }
+                }
+
                 ServiceCollection serviceCollection = new ServiceCollection();
                 await appHost.InitAsync(serviceCollection, startupConfig).ConfigureAwait(false);
 
@@ -549,7 +563,7 @@ namespace Jellyfin.Server
             }
             catch (Exception ex)
             {
-                _logger.LogWarning(ex, "Skia not available. Will fallback to NullIMageEncoder.");
+                _logger.LogWarning(ex, $"Skia not available. Will fallback to {nameof(NullImageEncoder)}.");
             }
 
             return new NullImageEncoder();