Fatal error: Uncaught TypeError: Return value of LizardMedia\ProductAttachment\Controller\Download\Attachment::loadAttachmentById() must implement interface LizardMedia\ProductAttachment\Api\Data\AttachmentInterface or be null, none returned in /home3/r80108sere/public_html/app/code/LizardMedia/ProductAttachment/Controller/Download/Attachment.php:110 Stack trace: #0 /home3/r80108sere/public_html/app/code/LizardMedia/ProductAttachment/Controller/Download/Attachment.php(71): LizardMedia\ProductAttachment\Controller\Download\Attachment->loadAttachmentById(15762) #1 /home3/r80108sere/public_html/vendor/magento/framework/App/Action/Action.php(108): LizardMedia\ProductAttachment\Controller\Download\Attachment->execute() #2 /home3/r80108sere/public_html/vendor/magento/framework/Interception/Interceptor.php(58): Magento\Framework\App\Action\Action->dispatch(Object(Magento\Framework\App\Request\Http)) #3 /home3/r80108sere/public_html/vendor/magento/framework/Interception/Interceptor.php(138): LizardMedia\ProductAttachment\Controll in /home3/r80108sere/public_html/app/code/LizardMedia/ProductAttachment/Controller/Download/Attachment.php on line 110