object(TypeError)#10207 (7) {
  ["message":protected]=>
  string(65) "usort(): Argument #1 ($array) must be of type array, string given"
  ["string":"Error":private]=>
  string(0) ""
  ["code":protected]=>
  int(0)
  ["file":protected]=>
  string(68) "/var/www/fold.lv/html/themes/fold/controllers/profile.controller.php"
  ["line":protected]=>
  int(61)
  ["trace":"Error":private]=>
  array(8) {
    [0]=>
    array(3) {
      ["file"]=>
      string(68) "/var/www/fold.lv/html/themes/fold/controllers/profile.controller.php"
      ["line"]=>
      int(61)
      ["function"]=>
      string(5) "usort"
    }
    [1]=>
    array(4) {
      ["file"]=>
      string(44) "/var/www/fold.lv/html/themes/fold/helper.php"
      ["line"]=>
      int(422)
      ["args"]=>
      array(1) {
        [0]=>
        string(68) "/var/www/fold.lv/html/themes/fold/controllers/profile.controller.php"
      }
      ["function"]=>
      string(7) "include"
    }
    [2]=>
    array(5) {
      ["file"]=>
      string(44) "/var/www/fold.lv/html/themes/fold/router.php"
      ["line"]=>
      int(23)
      ["function"]=>
      string(10) "controller"
      ["class"]=>
      string(11) "ThemeHelper"
      ["type"]=>
      string(2) "->"
    }
    [3]=>
    array(3) {
      ["file"]=>
      string(61) "/var/www/fold.lv/html/wordpress/wp-includes/class-wp-hook.php"
      ["line"]=>
      int(308)
      ["function"]=>
      string(15) "template_router"
    }
    [4]=>
    array(5) {
      ["file"]=>
      string(54) "/var/www/fold.lv/html/wordpress/wp-includes/plugin.php"
      ["line"]=>
      int(205)
      ["function"]=>
      string(13) "apply_filters"
      ["class"]=>
      string(7) "WP_Hook"
      ["type"]=>
      string(2) "->"
    }
    [5]=>
    array(3) {
      ["file"]=>
      string(63) "/var/www/fold.lv/html/wordpress/wp-includes/template-loader.php"
      ["line"]=>
      int(104)
      ["function"]=>
      string(13) "apply_filters"
    }
    [6]=>
    array(4) {
      ["file"]=>
      string(50) "/var/www/fold.lv/html/wordpress/wp-blog-header.php"
      ["line"]=>
      int(19)
      ["args"]=>
      array(1) {
        [0]=>
        string(63) "/var/www/fold.lv/html/wordpress/wp-includes/template-loader.php"
      }
      ["function"]=>
      string(12) "require_once"
    }
    [7]=>
    array(4) {
      ["file"]=>
      string(31) "/var/www/fold.lv/html/index.php"
      ["line"]=>
      int(19)
      ["args"]=>
      array(1) {
        [0]=>
        string(50) "/var/www/fold.lv/html/wordpress/wp-blog-header.php"
      }
      ["function"]=>
      string(7) "require"
    }
  }
  ["previous":"Error":private]=>
  NULL
}
<div style="padding: 15px; background: red; color: #fff"><h1><strong>OOPS&rarr;</strong>usort(): Argument #1 ($array) must be of type array, string given!</h1></div>