fix error format

suddenly-opened-ports-checker

@@ -3,6 +3,7 @@ import logging
 import yaml
 import math
 import html
+import traceback
 
 from argparse import ArgumentParser
 from lib.worker import Worker
@@ -88,10 +89,12 @@ def main():
         pass
     except Exception as e:
         if not args.no_telegram:
-            telegram_notify(html.escape(str(e)),
+            telegram_notify(html.escape(traceback.format_exc()),
                             parse_mode='html',
                             chat_id=config['telegram']['chat-id'],
                             token=config['telegram']['token'])
+        else:
+            traceback.print_exc()
 
 
 if __name__ == '__main__':