Fatal error: Uncaught Error: Interface "Magento\Framework\Setup\InstallSchemaInterface" not found in /var/www/magento/html/app/code/Aligent/AuthorityToLeave/Setup/InstallSchema.php:11
Stack trace:
#0 {main}
thrown in /var/www/magento/html/app/code/Aligent/AuthorityToLeave/Setup/InstallSchema.php on line 11