Ensure that unnecessary tg messages will not crash anything useful

ohlhafv/views.py

@@ -50,12 +50,16 @@ def ohlhafv_submit(request, *args, **kwargs):
         )
         send_email(email, subject, message)
         
-        tg_message = render_to_string(
+        try:
-            'ohlhafv:tgmsg.tpl', {
+            tg_message = render_to_string(
-                'challenge': challenge,
+                'ohlhafv:tgmsg.tpl', {
-                'url': url})
+                    'challenge': challenge,
-        bot = TelegramBot()
+                    'url': url})
-        bot.broadcast(tg_message)
+            bot = TelegramBot()
+            bot.broadcast(tg_message)
+        except: # tg spam is not critical. Ignore on failure
+            pass
+
         logging.debug(
             'Sent ohlhafv email to recipient <{}>'.format(email))
     else: