Please give us some details about the systems you are using:

• Client (OS name and version): Windows 10, VNCtiger v1.8.80
• Remmina version (remmina --version): 1.2.0-rcgit-27
• Desktop environment (GNOME, Unity, KDE, ..): GNOME 3.18.5
• Connecting to (OS and version): Ubuntu 16.04.4
• Connecting via (RDP, VNC, ...): VNCI

I set Remmina listening on VNC 5901
error log:

Welcome to 

在程序建立连接后出现异常 导致服务端崩溃

2020/08/01 14:05:00.324|DEBUG|===== FastTunnel Client Start =====
2020/08/01 14:05:00.934|DEBUG|通信已建立
2020/08/01 14:05:01.071|INFO|From Server:
=====隧道已建立成功，可通过以下方式访问内网服务=====

http://test.test.cc:1270 => 127.0.0.1:8001
test.cc:1273 => 127.0.0.1:22
test.cc:1274 => 192.168.0.91:3389

====================================================
2020/08/01 14:05:01.071

感谢分享！