Error: Exception: SQLSTATE[HY000] [2002] Connection refused (in /var/www/html/wire/core/ProcessWire.php line 377)

#0 /var/www/html/wire/core/ProcessWire.php(209): ProcessWire\ProcessWire->load(Object(ProcessWire\Config))
#1 /var/www/html/index.php(52): ProcessWire\ProcessWire->__construct(Object(ProcessWire\Config))
#2 {main}

This error message was shown because: site is in debug mode. ($config->debug = true; => /site/config.php). Error has been logged.