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Experiencing the same issue with a Ubuntu 16/04  LTS on hyper-v 

Details for Frame Buffer /dev/fb0:
Width : 1152
Height : 864
Stride : 2304
Bits Per Pixel : 16
Red Offset : 11
Green Offset : 5
Blue Offset : 0
Red Length : 5
Green Length : 6
Blue Length : 5

2019-01-02 16:52:48.647 +0000 Exception:
java.lang.IllegalArgumentException
at com.screenconnect.client.ClientScreenCapturer$FrameBufferMonitorManager.captureMonitor(ClientScreenCapturer.java:154)
at com.screenconnect.IncrementalScreenCapturer.run(IncrementalScreenCapturer.java:100)
at com.screenconnect.ScreenCapturer.run(ScreenCapturer.java:59)
at com.screenconnect.CaptureThreadRunner.run(CaptureThreadRunner.java:38)
at com.screenconnect.ThreadRunner.runThread(ThreadRunner.java:74)
at com.screenconnect.ThreadRunner.access$000(ThreadRunner.java:5)
at com.screenconnect.ThreadRunner$1.run(ThreadRunner.java:42)
at java.lang.Thread.run(java.base@9-internal/Thread.java:804)