A connection error has occured

[Agnor]

Hello, sorry for my bad english

I play Yu-Gi-Oh Tag Force, and I want to make multiplayer combat
Parts are identified by a two computers. But when I validate the duel, the connection stop and write "A connection error has occurred"

How to solve the problems?

Thanks

edit : add screen for help and add "Info"

894636 [SceNetAdhocMatchingEvent] INFO stdout - HELLO from fc:a8:1a:1e:86:9e
896661 [SceNetAdhocMatchingEvent] INFO stdout - HELLO from fc:a8:1a:1e:86:9e
898662 [SceNetAdhocMatchingEvent] INFO stdout - HELLO from fc:a8:1a:1e:86:9e
900669 [SceNetAdhocMatchingEvent] INFO stdout - HELLO from fc:a8:1a:1e:86:9e
902671 [SceNetAdhocMatchingEvent] INFO stdout - HELLO from fc:a8:1a:1e:86:9e
904690 [SceNetAdhocMatchingEvent] INFO stdout - HELLO from fc:a8:1a:1e:86:9e
905471 [SceNetAdhocMatchingEvent] INFO stdout - REQUEST from 10:cc:eb:74:09:ee
905525 [SceNetAdhocMatchingEvent] INFO stdout - ESTABLISHED from 10:cc:eb:74:09:ee
919493 [user_main] INFO hle.sceUtility - sceUtilityNetconfInitStart 0x08E27298-0x08E272D8: SceUtilityNetconf[address=0x08E27298, netAction=4, groupName=NYBRROS, timeout=20]
920024 [user_main] WARN hle.ThreadManForUser - hleKernelReceiveMbx unknown uid=0xffffffff
920025 [user_main] INFO hle.sceUtility - sceUtilityMsgDialogInitStart 0x08E27048-0x08E2728C: result 0x00000000
mode PSP_UTILITY_MSGDIALOG_MODE_TEXT
errorValue 0x00000000
message 'Erreur de connexion.'
options 0x00000000
buttonPressed 0x00000000
929987 [snd_thread_main] INFO hle.sceAtrac3plus - Replaying atrac loop atracID=1, loopStart=37797, loopEnd=2860200