Fatal error: Uncaught Hoa\Socket\Server::_open(): (1) Server cannot join tcp://tests.kanti.de:8889 and returns an error (number 0): Address already in use. in /var/customers/webs/kanti/1www/kanti/tests/socket/vendor/hoa/socket/Server.php at line 223. thrown in /var/customers/webs/kanti/1www/kanti/tests/socket/vendor/hoa/socket/Server.php on line 223