Lab 4.1 did not see expected log data, metric beat [warn]

Elastic Observability
1

In Observability Lab 4.1, the log messages contained this:
[elastic_agent.metricbeat][warn] Cannot index event publisher.Event{Content:beat.Event{
In the Logs, Stream, I enter "pets" in the highlight field, nothing was highlighted.

  1. What is wrong,
  2. what should I have done or learned,
  3. and how do I correct it?

In an earlier lab, the instructions led me to install Heartbeat. For the logs to work, do I need to install metricbeat also? The labs prior to 4.1 do not mention metricbeat.

stream live highlight pets
stream live highlight pets1390×645 181 KB

These are my results when I choose highlight and enter pets. This is not what the lab instructions show. The instructions show several shorter log messages which have pets highlighted.