Nothing happens on 7 ( Playbook conditionals ) step

[kksudo]

On 7 step ("Playbook conditionals") in this step

The register keyword records output from the apache2ctl configtest command (exit status, stdout, stderr, ...), and when: result|failed checks if the registered variable (result) contains a 
    failed status. 

    Here we go! Run the following command to execute our playbook:

Lesson - have a failed and ... nothing happens ....
No instructions, no tasks ...

[kksudo]

Sorry, i am restarted tutorial and the step began to work ...