After update #22 installation of some APS applications (mediawiki, TinyCMS, 4images, SugarCRM and etc.) fails with error:
Invalid structured output returned by script: Failed to parse structured output. Structured output: 'X-Powered-By: PHP/5.6.18 Content-type: text/html; charset=UTF-8'.
The behavior was considered as internal software issue #PPA-3143.
The fix is included in Plesk Automation MU#23.
Instructions on installing PA updates available at How to install PA updates.