Hi,
 
	When i create an order from backoffice, it dosent send email to the costumer and shows the following error:
 
	
		Class 'QRCodeLib' not found
	
	
		in file override/classes/pdf/HTMLTemplateInvoice.php at line 285
	
	
		Source file: override/classes/pdf/HTMLTemplateInvoice.php
	
	
		
266:            $description_short = strip_tags($product->description_short);
267:            if (Tools::strlen($description_short) > 90) {
268:                $stringCut = Tools::substr($description_short, 0, 90);
269:                $description_short = Tools::substr($stringCut, 0, strrpos($stringCut, ' ')).'...'; 
270:            }
271:            $order_detail['description_short'] = $description_short;
272:            $order_detail['barcode'] = '';
273:            $code = $template->barcodeproductformat;
274:            $text = '';
275:            if($code == 'product_link'){
276:                $text = $product->getLink();//urlencode($product->getLink());
277:            }else{
278:                $text = urlencode($order_detail[$code]);
279:            }
280:            $filename = md5($template->barcodeproducttype.'_'.$text).'.png';
281:            if(!Tools::file_exists_no_cache(_PS_MODULE_DIR_.'gwadvancedinvoice/views/img/barcodes/'.$filename)){
282:                if($template->barcodeproducttype == 'qrcode'){
283:                    $ecc = 0;
284:                    if($code == 'product_link') $ecc = 1;
285:                    $qrcodeObj =  new QRCodeLib($text,$ecc);
286:                    $im = $qrcodeObj->createImage(4,2);
287:                    imagepng($im,_PS_MODULE_DIR_.'gwadvancedinvoice/views/img/barcodes/'.$filename);
288:                }else{
289:                    $bacodeObj = new Barcode($text,$template->barcodeproducttype);
290:                    $bacodeObj->getBarcodePNG(_PS_MODULE_DIR_.'gwadvancedinvoice/views/img/barcodes/'.$filename,2,35,array(0,0,0)); 
291:                }
292:            }
293:            if(Tools::file_exists_no_cache(_PS_MODULE_DIR_.'gwadvancedinvoice/views/img/barcodes/'.$filename)){
294:                $order_detail['barcode'] = '<img src="'.$base_url.'modules/gwadvancedinvoice/views/img/barcodes/'.$filename.'"/>';
		
			Do you have any solution for it? Thank you.