Connection reset by peer

Hello sir I have problem when update firmware .

log :

=== DongleManager [Infinity] v1.72 [22/06/18 12:20:57] ===
Box/Dongle type selected: Infinity-Box/Dongle
Card-Reader: Generic EMV Smartcard Reader 0
HWID: 0000108613E64082
Box/Dongle found: Infinity-Box/Dongle
Reading...
Serial No (S/N): 78C51086
Firmware version: 0136.02
=== Process started: 22/06/18 12:20:58 ===
Connecting to server
Server connection successfully established
Checking DongleManager version...
Your DongleManager is up-to-date
Checking Dongle Identification...
Authenticating on server...
Authentication successfull
Service stage 1 confirmed
Securing session...
Error securing session:
Socket Error # 10054
Connection reset by peer.