If your are getting a 'class or interceptor does not exist' error message in your Magento 2 plugin, a probable solution is to run the following CLI commands in your terminal:
bin/magento setup:upgrade && bin/magento setup:di:compile
If your are getting a 'class or interceptor does not exist' error message in your Magento 2 plugin, a probable solution is to run the following CLI commands in your terminal:
bin/magento setup:upgrade && bin/magento setup:di:compile