I try to upgrade 2.1.9 to 2.2.4 but got this error on site:

Fatal error: Uncaught Error: Cannot instantiate interface Magento\Framework\Serialize\SerializerInterface in vendor/magento/framework/ObjectManager/Factory/Dynamic/Developer.php

  • yes I tried removing var/cache and var/generation also change mode..but still same error – kristy May 11 '18 at 11:27
  • are you on developer mode – Vishwas Bhatnagar May 11 '18 at 12:24

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