How to fix this?

root@jmpnet:/etc/ansible# ansible-playbook test-asa.yml
ERROR! ‘debug’ is not a valid attribute for a Play

The error appears to be in ‘/etc/ansible/test-asa.yml’: line 15, column 3, but may
be elsewhere in the file depending on the exact syntax problem.

The offending line appears to be:

  • debug: var=output.stdout_lines
    ^ here

Your debug task is wrongly indented