Zend Equivalent class for Magento 2.4.6

We have updated our website to Magento 2.4.6.

We are facing Zend issue with the following

1.Zend_Pdf
pdf = new Zend_Pdf();
$page = new Zend_Pdf_Page(Zend_Pdf_Page::SIZE_A4);
//var_dump($page);

2.Zend_Log_Exception

Can anyone please tell the equivalent class for the above.

Thanks,
Jayashree