Handle nullability

RSND/Core/Database.cs

@@ -86,7 +86,10 @@ public class Database
         var tableToReturn = _tables.Find(x => x.Name == table);
         var row = tableToReturn?.Rows?.FirstOrDefault(x => x.Columns?.FirstOrDefault(y => y.Name == key)?.Name == key);
         var column = row?.Columns?.FirstOrDefault(x => x.Name == key);
-        column.Value = value;
+        
+        if (column != null)
+            column.Value = value;
+        
         Save();
     }