Magento 2 Fatal error: Uncaught Error: Class not found

Question

I am using one custom php library in magento 2 to convert html to pdf. Here is the code that i am using.

<?php
namespace Company\Module\Controller\Adminhtml\Quote;
use Magento\Framework\App\Action\Action;
use Magento\Framework\App\Action\Context;
use Magento\Framework\App\Filesystem\DirectoryList as DirectoryList;
use Company\Module\Helper\PdfCrowd;
class QuotePdf extends Action
{
 /**
 * @var \Magento\Framework\App\Response\Http\FileFactory
 */
 protected $fileFactory;
 protected $_mediaDirectory;
 protected $directory_list;
 protected $dompdfFactory;
 protected $layoutFactory;
 protected $authSession;
 //protected $quote_info;
 protected $userFactory;
 public function __construct(
 Context $context,
 \Magento\Framework\App\Response\Http\FileFactory $fileFactory,
 \Magento\Framework\Filesystem $filesystem,
 \Magento\Backend\Model\Auth\Session $authSession,
 DirectoryList $directory_list,
 \Magento\User\Model\UserFactory $userFactory
 ) {
 parent::__construct($context);
 $this->fileFactory = $fileFactory;
 $this->authSession = $authSession;
 $this->_mediaDirectory = $filesystem->getDirectoryWrite(DirectoryList::MEDIA);
 $this->directory_list = $directory_list;
 $this->userFactory = $userFactory;
 }
 public function execute()
 {
 if($this->authSession->isLoggedIn()){
 $id = $this->getRequest()->getParam('id');
 $client = new Pdfcrowd("MYUSERNAME", "xxxxxxx-KEY");
 // set HTTP response headers
 $pdf = $client->convertHtml($this->getHtmlForPdf($id));
 header("Content-Type: application/pdf");
 header("Cache-Control: no-cache");
 header("Accept-Ranges: none");
 header("Content-Disposition: attachment; filename=commercialsale-".$id.".pdf");
 echo $pdf;
 }
 }
}

Here is my Helpler file

<?php
namespace Company\Module\Helper;
class PdfCrowd {
 //
 // Pdfcrowd constructor.
 // 
 // $username - your username at Pdfcrowd
 // $apikey - your API key
 // $hostname - API hostname, defaults to pdfcrowd.com
 // 
 function __construct($username, $apikey, $hostname=null){
 if ($hostname)
 $this->hostname = $hostname;
 else
 $this->hostname = self::$api_host;
 $this->useSSL(false);
 $this->fields = array(
 'username' => $username,
 'key' => $apikey,
 'pdf_scaling_factor' => 1,
 'html_zoom' => 200);
 $this->proxy_name = null;
 $this->proxy_port = null;
 $this->proxy_username = "";
 $this->proxy_password = "";
 $this->user_agent = "pdfcrowd_php_client_".self::$client_version."_(http://pdfcrowd.com)";
 }
}
?>

And here is the error that i am getting...

Fatal error: Uncaught Error: Class 'Company\Module\Helper\PdfCrowd' not found in /home/patios/public_html/app/code/Company/Module/Controller/Adminhtml/Quote/QuotePdf.php:49 Stack trace: #0 /home/patios/public_html/vendor/magento/framework/App/Action/Action.php(107): Company\Module\Controller\Adminhtml\Quote\QuotePdf->execute() #1 /home/patios/public_html/vendor/magento/framework/Interception/Interceptor.php(58): Magento\Framework\App\Action\Action->dispatch(Object(Magento\Framework\App\Request\Http)) 2 /home/patios/public_html/vendor/magento/framework/Interception/Interceptor.php(138): Company\Module\Controller\Adminhtml\Quote\QuotePdf\Interceptor->___callParent('dispatch', Array) 3 /home/patios/public_html/vendor/magento/framework/Interception/Interceptor.php(153): Company\Module\Controller\Adminhtml\Quote\QuotePdf\Interceptor->Magento\Framework\Interception{closure}(Object(Magento\Framework\App\Request\Http)) 4 /home/patios/public_html/generated/code/Company/Module/Controller/Adminhtml in /home/patios/public_html/app/code/Company/Module/Controller/Adminhtml/Quote/QuotePdf.php on line 49

Note: This code is working on my local but not on live server.

• Sohel Rana: Check exact folder and class name for Company\Module\Helper\PdfCrowd
• Hardik: Thanks to pointing me. Sorry actually there is capital word issue in my file name. Strange that this is working in my local.
• Sohel Rana: yes, Linux is naming strict type. But other system like windows, mac not.

Answer 1

Use below on your helper file:

class PdfCrowd extends \Magento\Framework\App\Helper\AbstractHelper{
}

instead of

class PdfCrowd{
}

Answer 2

Try this:

<?php
namespace Company\Module\Controller\Adminhtml\Quote;
use Magento\Framework\App\Action\Action;
use Magento\Framework\App\Action\Context;
use Magento\Framework\App\Filesystem\DirectoryList as DirectoryList;
use Company\Module\Helper\PdfCrowd;
class QuotePdf extends Action
{
 /**
 * @var \Magento\Framework\App\Response\Http\FileFactory
 */
 protected $fileFactory;
 protected $_mediaDirectory;
 protected $directory_list;
 protected $dompdfFactory;
 protected $layoutFactory;
 protected $authSession;
 //protected $quote_info;
 protected $userFactory;
 protected $_pdfCrowd;
 public function __construct(
 Context $context,
 \Magento\Framework\App\Response\Http\FileFactory $fileFactory,
 \Magento\Framework\Filesystem $filesystem,
 \Magento\Backend\Model\Auth\Session $authSession,
 PdfCrowd $pdfCrowd,
 DirectoryList $directory_list,
 \Magento\User\Model\UserFactory $userFactory
 ) {
 parent::__construct($context);
 $this->_pdfCrowd = $pdfCrowd;
 $this->fileFactory = $fileFactory;
 $this->authSession = $authSession;
 $this->_mediaDirectory = $filesystem->getDirectoryWrite(DirectoryList::MEDIA);
 $this->directory_list = $directory_list;
 $this->userFactory = $userFactory;
 }
 public function execute()
 {
 if($this->authSession->isLoggedIn()){
 $id = $this->getRequest()->getParam('id');
 $client = $this->_pdfCrowd->createPdf("MYUSERNAME", "xxxxxxx-KEY");
 // set HTTP response headers
 $pdf = $client->convertHtml($this->getHtmlForPdf($id));
 header("Content-Type: application/pdf");
 header("Cache-Control: no-cache");
 header("Accept-Ranges: none");
 header("Content-Disposition: attachment; filename=commercialsale-".$id.".pdf");
 echo $pdf;
 }
 }
}

I have replaced method name and called with dependency injection.

<?php
namespace Company\Module\Helper;
class PdfCrowd {
 //
 // Pdfcrowd constructor.
 // 
 // $username - your username at Pdfcrowd
 // $apikey - your API key
 // $hostname - API hostname, defaults to pdfcrowd.com
 // 
 function createPdf($username, $apikey, $hostname=null){
 if ($hostname)
 $this->hostname = $hostname;
 else
 $this->hostname = self::$api_host;
 $this->useSSL(false);
 $this->fields = array(
 'username' => $username,
 'key' => $apikey,
 'pdf_scaling_factor' => 1,
 'html_zoom' => 200);
 $this->proxy_name = null;
 $this->proxy_port = null;
 $this->proxy_username = "";
 $this->proxy_password = "";
 $this->user_agent = "pdfcrowd_php_client_".self::$client_version."_(http://pdfcrowd.com)";
 }
}
?>

• Hardik: This error. Class Company\Module\Helper\PdfCrowd does not exist in [Company\Module\Controller\Adminhtml\Quote\QuotePdf\Interceptor]
• kunj: please run this php bin/magento setup:di:compile then php bin/magento cache:flush