Unknown MySQL server host 'mysql5-20' (1)/captcha/png/0HEBZNYKLV2U7V3KHMTR
  (1024) Can't connect to MySQL server   Database.php   line 68     17-12-17   12:52
FrontController->dispatch() # line   18, file: /home/arfooo/www/index.php
  call_user_func_array(Array[2], Array[1]) # line  211, file: /home/arfooo/www/core/FrontController.php
    CaptchaController->pngAction("0HEBZNYKLV2U7V3KHMTR") # line    0, file: unknown
      Model->find(Object:Criteria) # line   46, file: /home/arfooo/www/controllers/CaptchaController.php
        Database->sqlGetRow("SELECT * FROM News_captchacodes WHERE publicCode = '0HEBZNYKLV2U...") # line   92, file: /home/arfooo/www/core/Model.php
          Database->sqlQuery("SELECT * FROM News_captchacodes WHERE publicCode = '0HEBZNYKLV2U...") # line  330, file: /home/arfooo/www/core/Database.php
            Database->connect() # line  210, file: /home/arfooo/www/core/Database.php
              trigger_error("<b>Can't connect to MySQL server</b></b>") # line   68, file: /home/arfooo/www/core/Database.php