# Photon Unity Network with Socket IO Ambiguities

When trying to use Socket.IO along with PUN I get multiple errors similar to the one below:

The call is ambiguous between the following methods or properties: WebSocketSharp.Ext.SubArray<byte>(this byte[], int, int)' and WebSocketSharp.Ext.SubArray<byte>(this byte[], int, int)'

I searched a lot and couldn't find any other class with the same name/namespace that could lead to this ambiguity. Please help.