yii\debug\panels\TimelinePanel::load PHP Method

    public function load($data)
    {
        if (!isset($data['start']) || empty($data['start'])) {
            throw new \RuntimeException('Unable to determine request start time');
        }
        $this->_start = $data['start'] * 1000;
        if (!isset($data['end']) || empty($data['end'])) {
            throw new \RuntimeException('Unable to determine request end time');
        }
        $this->_end = $data['end'] * 1000;
        if (isset($this->module->panels['profiling']->data['time'])) {
            $this->_duration = $this->module->panels['profiling']->data['time'] * 1000;
        } else {
            $this->_duration = $this->_end - $this->_start;
        }
        if ($this->_duration <= 0) {
            throw new \RuntimeException('Duration cannot be zero');
        }
    }