Spark stuck with transfer files

hey all Spark is only stuck when we try to recieve a file Receive files files is there a problem with spark or openfire settings. I don’t thing it’s openfire but thanks for the information.

and this is the error message

2009.09.29 09:15:11 Packet sent to unreachable address 2009.09.29 08:43:35 User Login Failed. PLAIN authentication failed 2009.09.29 08:42:38 Packet sent to unreachable address 2009.09.28 11:47:35 Packet sent to unreachable address