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java.net.SocketException: Invalid argument at java.net.PlainSocketImpl.socketAccept(Native Method) at java.net.AbstractPlainSocketImpl.accept(AbstractPlainSocketImpl.java:398) at java.net.ServerSocket.implAccept(ServerSocket.java:522) at java.net.ServerSocket.accept(ServerSocket.java:490) at field.core.plugins.help.NanoHTTPD$1.run(NanoHTTPD.java:493) at java.lang.Thread.run(Thread.java:722)