RotMG Fabiano Source [Socket-Server IO Error: Error #2031]

Hey my friend has a RotMG Private Server and when I try to connect to the nexus it gives a message saying "Socket-Server IO Error: Error #2031" If anyone can help us it would be great we would really appreciate it. Thanks!

Info
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Fabiano Swagger of Doom Source
Windows 7
Using IPv4 Address for connection
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Tools
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XAMPP Control Panel
Visual Studio
Heidi SQL
Yogda
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