The Magento Expert

Fixing Class Zend_Json not found in Magento 2.4.6

Mex — Fri, 05 May 2023 07:49:03 +0000

After upgrading your Magento store to 2.4.6, you may encounter the following message: Class “Zend_Json” not found in <...>. The problem is that using certain Zend classes is no longer supported in Magento 2.4.6. Replace Zend_Json with the following code:

\Laminas\Json\Json

Replace every occurrence of \Zend_Json with \Laminas\Json\Json to resolve the issue. Make sure that the laminas/laminas-serializer library is installed.

Example:

return \Zend_Json::encode($jsonArray);

becomes

return \Laminas\Json\Json::encode($jsonArray);

Solving the “Fatal error: Declaration of Zend_Pdf_FileParserDataSource_File::__construct()” error

Wed, 15 Apr 2015 08:01:42 +0000

Sometimes, when saving an invoice for an order, the following error might come up:

Fatal error: Declaration of Zend_Pdf_FileParserDataSource_File::__construct() must be compatible with Zend_Pdf_FileParserDataSource::__construct() in /var/www/vhosts/website/httpdocs/includes/src/Zend_Pdf_FileParserDataSource_File.php on line 41

To solve that problem, open the lib/Zend/Pdf/FileParserDataSource.php class and change the declaration of the abstract function __construct like this:

From

abstract public function __construct();

abstract public function __construct($filePath);

Fixing the Zend_Pdf_FileParserDataSource_File::__construct() declaration error

Mex — Wed, 15 Apr 2015 07:58:08 +0000

The following error may appear when you attempt to print an invoice:

To resolve it, open the class lib/Zend/Pdf/FileParserDataSource.php and change the declaration of the abstract method __construct as follows:

From

abstract public function __construct();

abstract public function __construct($filePath);