Getting "No such property: issue for class: Script10"

[Yashvanth P]

Script

import com.atlassian.jira.issue.Issue;

Issue issue = issue

log.debug issue.getKey()

I am new to script runner, please help me in resolving this error ""No such property: issue for class: Script10"

[JamieA]

In what context, are you running this in the script console?

"issue" is only a bound variable in workflow functions and script fields etc, where it makes sense.