Configurable reports block (plugin)

In configurable_reports\components\filters\categories\plugin.class.php

In function 

function print_filter(&$mform){

.....

.....

$categorieslist = $reportclass->elements_by_conditions($conditions);
}
else{
$categorieslist = array_keys($DB->get_records('course'));  // line number  74... you are passing 'course' it is supposed to be 'course_categories'
}

...............

Anyways, thanks for creating this plugin.