java.lang.NoClassDefFoundError: com/sun/jna/Library

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java.lang.NoClassDefFoundError: com/sun/jna/Library
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(
at Method)
at java.lang.ClassLoader.loadClass(
at sun.misc.Launcher$AppClassLoader.loadClass(
at java.lang.ClassLoader.loadClass(
at webcamstudio.exporter.vloopback.VideoDevice.openDevice(
at webcamstudio.exporter.vloopback.VideoDevice.loadInfo(
at webcamstudio.exporter.vloopback.VideoDevice.(
at webcamstudio.exporter.vloopback.VideoDevice.getDevices(
at webcamstudio.exporter.vloopback.VideoDevice.getInputDevices(
at webcamstudio.components.OutputPanel.(

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