If your Magento throws error after installing your Extension and you don't know how to resolve it then you can Disable installed Extension. You can do this by going to your Magento Root Directory and then goto “app/etc/modules”. There you will find your Extension file (XML format), something like that “Excellence_Extensionname.xml”.

  1. Run the following command via CLI: php bin/magento module:disable Excellence_ModuleName
  2. Delete the Module files from {magento installation directory path}\app\code
  3. Remove module entry from below tables core_config_data & setup_module
  4. Now run following two commands: php bin/magento setup:upgrade
  5. php bin/magento cache:flush
  6. Fix permission of var folder