If there were errors at the moment of the rule execution, the user will see the link with the count of failed events that happened lately next to the rule name.
By pressing on this link the user can review the detailed information about the errors.
The logs are stored for 2 weeks. Unfortunately, it is not possible to get details about old runs.
console.log(variable, 'optional description');
The output will be shown in the log:
Updated almost 2 years ago