MySQL connection error: (# 2002) 'Operation now in progress'

Stack trace:
[ 0] __construct({Array( [dbHost] => vsviajes.activexsoft.eu [dbU...})  @  /base/zfx/data-model/Model.php[102]
[ 1] __construct(imagenes, )  @  /models/my/ModeloBase.php[27]
[ 2] __construct(imagenes, )  @  /modules/imagenes/models/MImagenes.php[36]
[ 3] __construct(, )  @  /base/zfx/activex-tools/ModelHandler.php[110]
[ 4] inst(imagenes, imagenes)  @  /base/axs/main/Templatizer.php[48]
[ 5] initTemplate(PUBLICO, )  @  /controllers/abstract/ScopeBase.php[78]
[ 6] loadCommon(index, , , , {Array( [id] => 2 [titulo] => Defecto klorofil F...})  @  /modules/index/controllers/Index.php[228]
[ 7] index()  @  /modules/index/controllers/Index.php[48]
[ 8] _main()  @  /index.php[197]