added try catch for when a site could be down or blocking requests

Newsbot.Collector.Services/HtmlParser/HtmlPageReader.cs

@@ -36,12 +36,20 @@ public class HtmlPageReader
     private string ReadSiteContent(string url)
     {
         using var client = new HttpClient();
+        try
+        {
             var html = client.GetStringAsync(url);
             html.Wait();
 
             var content = html.Result;
             return content;
         }
+        catch (Exception ex)
+        {
+            Console.WriteLine($"Failed to connect to '{url}'. {ex.Message}");
+            return "";
+        }
+    }
 
     public string GetSiteContent()
     {