Stackdriver is the logging framework provided by Google Cloud. It provides all the typical logging levels including INFO, ERRORS etc.
Tracking them to generate email alerts with customized messages can help actively solve production issues.
Message customized in the video is provided below -
Test:Message
SQ for project - ${project}
Failed query - ${metric.labels.query}
Error Message - ${metric.labels.errortext}
Kindly rectify the issue.