I am seeing the message that I need to enter a license for the Megamenu extension; however, when I go to VENUSTHEME -> Licenses, I get the following error message printed on the page:

Exception #0 (SoapFault): SOAP-ERROR: Parsing WSDL: Couldn't load from 'https://landofcoder.com/api/soap/?wsdl=1' : complex type 'handleType', attribute 'base': The QName value 'layoutType' does not resolve to a(n) simple type definition.
#0 /var/www/myproject.com/app/code/Ves/All/Block/Adminhtml/System/ListLicense.php(76): SoapClient->SoapClient('https://landofc...')
#1 /var/www/myproject.com/vendor/magento/framework/Data/Form/Element/AbstractElement.php(453): Ves\All\Block\Adminhtml\System\ListLicense->render(Object(Magento\Framework\Data\Form\Element\Text))
#2 /var/www/myproject.com/vendor/magento/framework/Data/Form/Element/Text.php(43): Magento\Framework\Data\Form\Element\AbstractElement->getHtml()
#3 /var/www/myproject.com/vendor/magento/framework/Data/Form/Element/AbstractElement.php(467): Magento\Framework\Data\Form\Element\Text->getHtml()
#4 /var/www/myproject.com/vendor/magento/module-config/Block/System/Config/Form/Fieldset.php(81): Magento\Framework\Data\Form\Element\AbstractElement->toHtml()
#5 /var/www/myproject.com/vendor/magento/module-config/Block/System/Config/Form/Fieldset.php(62): Magento\Config\Block\System\Config\Form\Fieldset->_getChildrenElementsHtml(Object(Magento\Framework\Data\Form\Element\Fieldset))
#6 /var/www/myproject.com/vendor/magento/framework/Data/Form/Element/AbstractElement.php(453): Magento\Config\Block\System\Config\Form\Fieldset->render(Object(Magento\Framework\Data\Form\Element\Fieldset))
#7 /var/www/myproject.com/vendor/magento/framework/Data/Form/Element/AbstractElement.php(467): Magento\Framework\Data\Form\Element\AbstractElement->getHtml()
#8 /var/www/myproject.com/vendor/magento/framework/Data/Form.php(322): Magento\Framework\Data\Form\Element\AbstractElement->toHtml()
#9 /var/www/myproject.com/vendor/magento/framework/Data/Form.php(337): Magento\Framework\Data\Form->toHtml()

I have the SOAP library installed and enabled in PHP. How can I get this resolved?