Problem following 'Security Check'

[rosso]

localhost page appeared as normal, starting stopping all good.

Then,
I ran the Security Check as suggested:

sudo /Applications/XAMPP/xamppfiles/xampp security

adding passwords for each prompted step. Disabled external FTP access.

but afterward MySQL will not start successfully. It begins then stops.

Web Server and ProFTPD running ok.

I have restarted web server and Manager App.

Any help appreciated. thanks

Apache/2.4.37 (Unix) OpenSSL/1.0.2q PHP/5.6.40 mod_perl/2.0.8-dev Perl/v5.16.3
Database client version: libmysql - mysqlnd 5.0.11-dev - 20120503 - $Id: xxx
PHP extension: mysqliDocumentation curlDocumentation mbstringDocumentation
PHP version: 5.6.40

OS X 10.12.6

[rosso]

Used Uninstaller then Reinstalled and works again, but now hesitant to run the Security Check again.

[Nobbie]

Who or what suggested to do so?