rsyslogd shows the message "Invalid protocol 'UDP ' in allowed sender list, line ignored".

Issue

• I have configured remote logging with rsyslog and some configurations are not working as expected.
• I am restricting remote senders by $AllowedSender but the directive looks like it is not working.

• rsyslogd shows the below message.

  Jun 27 12:34:38 rhel9u0 rsyslogd[33297]: rsyslogd[33297]: Invalid protocol 'UDP ' in allowed sender list, line ignored [v8.2102.0-101.el9]
  Jun 27 12:34:38 rhel9u0 systemd[1]: Started System Logging Service.
  Jun 27 12:34:38 rhel9u0 rsyslogd[33297]: error: extra characters in config line ignored: '127.0.0.1, 192.168.122.196' [v8.2102.0-101.el9]