public function renderTrace($debug_backtrace)
    {
        $renderTrace = '';
        $renderTrace .= '<span class="fs-label">';
        foreach ($debug_backtrace as $index => $trace) {
            $renderTrace .= '#' . $index . ' ';
            if (!empty($trace['file'])) {
                $renderTrace .= $trace['file'];
            }
            if (!empty($trace['line'])) {
                $renderTrace .= '(' . $trace['line'] . ') ';
            }
            if (!empty($trace['class'])) {
                $renderTrace .= $trace['class'] . '::';
            }
            $renderTrace .= $trace['function'] . '()'
                . '<br>';
        }
        $renderTrace .= '</span>';
        return $renderTrace;
    }