fix null guard

Core/Generators/BotGenerator.cs

@@ -497,7 +497,7 @@ public class BotGenerator
 
         // Some bodies have matching hands, look up body to see if this is the case
         var chosenBody = bodyGlobalDictDb.FirstOrDefault(c => c.Key == chosenBodyTemplate?.Name.Trim());
-        bot.Customization.Hands = chosenBody.Value.IsNotRandom ?? false
+        bot.Customization.Hands = chosenBody.Value?.IsNotRandom ?? false
             ? chosenBody.Value.Hands // Has fixed hands for chosen body, update to match
             : _weightedRandomHelper.GetWeightedValue<string>(appearance.Hands); // Hands can be random, choose any from weighted dict
     }