potential fix for a invalid operation exception on client update

change client library cdn provider as cdnjs seems broken at the moment

Application/IW4MServer.cs

@@ -558,7 +558,12 @@ namespace IW4MAdmin
 
         private async Task OnClientUpdate(EFClient origin)
         {
-            var client = GetClientsAsList().First(_client => _client.Equals(origin));
+            var client = GetClientsAsList().FirstOrDefault(_client => _client.Equals(origin));
+
+            if (client == null)
+            {
+                Logger.WriteWarning($"{origin} expected to exist in client list for update, but they do not");
+            }
 
             client.Ping = origin.Ping;
             client.Score = origin.Score;

Application/Main.cs

@@ -236,9 +236,10 @@ namespace IW4MAdmin.Application
 
         private static void ConfigureServices()
         {
-            //var serviceProvider = new ServiceCollection();
-            //serviceProvider.AddSingleton<IManager>(ServerManager);
-            //serviceProvider.BuildServiceProvider();
+            var serviceProvider = new ServiceCollection();
+            serviceProvider.AddSingleton<IManager>(ServerManager);
+            var builder = serviceProvider.BuildServiceProvider();
+            builder.Dispose();
         }
     }
 }

WebfrontCore/Controllers/API/APIController.cs

@@ -12,6 +12,7 @@ namespace WebfrontCore.Controllers.API
         {
 
         }
+
         public IActionResult Index()
         {
             return Ok($"IW4MAdmin API");

WebfrontCore/libman.json

@@ -1,6 +1,6 @@
 {
   "version": "1.0",
-  "defaultProvider": "cdnjs",
+  "defaultProvider": "jsdelivr",
   "libraries": [
     {
       "library": "jquery@3.3.1",
@@ -24,7 +24,7 @@
       "destination": "wwwroot/lib/bootstrap/"
     },
     {
-      "library": "moment.js@2.24.0",
+      "library": "moment@2.24.0",
       "destination": "wwwroot/lib/moment.js/"
     }
   ]