Error after install/update

Hello tech support,
I have recently tried to upgrade my Uber mega menu to the latest 1.1.4 version on my M2 version 2.1.8 community version.  This is the error message that I receive:

1 exception(s):
Exception #0 (ReflectionException): Class Magento\Framework\Serialize\SerializerInterface does not exist

Exception #0 (ReflectionException): Class Magento\Framework\Serialize\SerializerInterface does not exist
#0 /www/sites/ ReflectionClass->__construct('Magento\\Framewo...')
#1 /www/sites/ Magento\Framework\Code\Reader\ClassReader->getConstructor('Magento\\Framewo...')
#2 /www/sites/ Magento\Framework\ObjectManager\Definition\Runtime->getParameters('Magento\\Framewo...')
#3 /www/sites/ Magento\Framework\ObjectManager\Factory\Dynamic\Developer->create('Magento\\Framewo...')
#4 /www/sites/ Magento\Framework\ObjectManager\ObjectManager->get('Magento\\Framewo...')
#5 /www/sites/ Ubertheme\UbMegaMenu\Block\Menu->getSerializer()
#6 /www/sites/ Ubertheme\UbMegaMenu\Block\Menu->_generateMenuHtml('4')
#7 /www/sites/ Ubertheme\UbMegaMenu\Block\Menu->_toHtml()
#8 /www/sites/ Magento\Framework\View\Element\AbstractBlock->toHtml()
#9 /www/sites/ Ubertheme\UbMegaMenu\Block\Menu\Interceptor->toHtml()
#10 /www/sites/ Magento\Framework\View\Layout->_renderBlock('')
#11 /www/sites/ Magento\Framework\View\Layout->renderNonCachedElement('')

Was this version of mega menu still compatible with M2 ver 2.1.8? How can this be fixed?

7 answers

Profile photo of ubdev Staff 97650.00 $tone December 10, 2018

Hi there, 
Our latest UB Mega Menu v1.1.4 has just been updated with tweak code for compatibility with Magento 2.2.7 and Magento 2.3.0. We wonder if you can upgrade your Magento instance to the latest ver 2.2.7 or 2.3.0? 
If you still want to use our UB Mega Menu on your current M2.1.8 instance, please provide us the following credentials, we will check and apply a quick fix for you: 

  • URL and admin credentials of your M2 instance
  • SSH Credentials of your M2 instance
  • Let us know the path to your M2 folder

Ubertheme team

Profile photo of sragsdale 110.00 $tone December 14, 2018

Worked perfectly. Thanks for all your help.  Now I can use your assistance to fix my submenu alignment issues that I am having with the full-width menu options.  I started a new private question for that one.  Thank you.

Profile photo of ubdev Staff 97650.00 $tone December 14, 2018

Hi there, 
We see you did submit a private ticket here. However, we could not access your M2 admin yet. Please check and follow up further with us via your new ticket. 
Ubertheme team


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