if (!empty($endTime) AND !empty($startTime)) {
            $this->whereCondition['time:BETWEEN'] = $startTime;
            $this->whereCondition['time:AND'] = $endTime;
        }
        
        if (!empty($product)) {
             $this->whereCondition['product:='] = $product;
        }
        
        if (!empty($action)) {
             $this->whereCondition['action:='] = $action;
        }
        
        
        $collection = $this->pdo->getCollection(
            $this->classKey,
            $this->whereCondition,
            ...

$this->where("time BETWEEN $startTime AND $endTime");

// попробовать так вызывать, указать явно PDO::LOG_LEVEL_ERROR
$this->modx->log(xPDO::LOG_LEVEL_ERROR, '1-1');

// тут я пальцем в небо, какие из этих строчек может помогут, но сначала то что выше написал попробуйте
$this->modx->getService('error','error.modError');
$this->modx->setLogLevel(xPDO::LOG_LEVEL_ERROR);

<?
file_put_contents(MODX_ASSETS_PATH.'log.txt', print_r('1-1',1), FILE_APPEND | LOCK_EX);

$this->modx->log(1, print_r($success_page,1))

//Например этот участок кода

if ($this->config['json_response']) {
    /** Вот мои изменения ниже */
    $success_page = $this->modx->getOption('ms2_order_success_page');
    $this->modx->log(1, print_r($success_page,1))
    if(is_numeric($success_page)) {
        if ($this->modx->getCount('modResource', array('id'=>$success_page,'published' => true,'deleted' => false))) {
            $this->modx->log(1, print_r('1-1',1))
            $url = $this->modx->context->makeUrl($success_page);
            return $this->success('', array('redirect' => $url.'?msorder='.$order->get('id')));
	}
    }
    $this->modx->log(1, print_r('1-2',1))
    return $this->success('', ['msorder' => $msOrder->get('id')]);
}
$this->modx->log(1, print_r('2-1',1))
$redirect = $this->modx->context->makeUrl(
    $this->modx->resource->id,
    ['msorder' => $msOrder->get('id')]
);
$this->modx->log(1, print_r('2-2'.$redirect,1))
$this->modx->sendRedirect($redirect);

if ($this->config['json_response']) {}

&where=`{"Data.stock:!=":"0"}`

&includeTVs=`tvname`
&where=`{"tvname:!=":"0"}`