I'm having issues just getting CiviCRM installed.
This is a Drupal 7.55 install. I got as far as installing CiviCRM as a module but the next step is to go to the install/index.php file and that is where I get my HTTP 500 error.
Looking at the apache error log it is a PHP parse error
PHP Parse error: syntax error, unexpected 'clone' (T_CLONE), expecting '('
and then a link to this file
/civicrm/packages/DB/DataObject.php(207) : eval()'d code on line 1
Can someone help me out with this?