SQLSTATE[HY000] [2002] Connection refused (SQL: select * from information_schema.tables where table_schema = cube and table_name = migrations and table_type = 'BASE TABLE') code example

Example: SQLSTATE[HY000] [2002] Connection refused (SQL: select * from information_schema.tables where table_schema = ipris and table_name = migrations and table_type = 'BASE TABLE')

php artisan cache:clear 
php artisan config:clear