How to fix error in Magento 2 PHP Fatal error: Uncaught Error: Cannot instantiate interface Magento\Theme\Model\Theme\StoreThemesResolverInterface vendor/magento/framework/ObjectManager/Factory/Dynamic/Developer. php:50?
If you will see in ssh of magento 2 messages something like this (after upgrade):
PHP Fatal error: Uncaught Error: Cannot instantiate interface Magento\Theme\Model\Theme\StoreThemesResolverInterface in /vendor/magento/framework/ObjectManager/Factory/Dynamic/Developer. php:50
you need just run in ssh this command:
redis-cli flushall