Fix invalid format specifier

notify_user.py

@@ -48,7 +48,7 @@ def notify_user(ch, method, properties, body):
             if args.dry_run:
                 logger.info(f'smtp = smtplib.SMTP({mail_cfg.Server})')
                 logger.info(f'smtp.sendmail({mail_cfg.Sender}, {receiver}, message)')
-                logger.info(f"table.insert({'username': {username}, 'count': 1, 'sent_at': {datetime.now()}})")
+                logger.info(f"table.insert({{'username': {username}, 'count': 1, 'sent_at': datetime.now()}})")
 
             else:
                 smtp = smtplib.SMTP(mail_cfg.Server)