java.lang.NullPointerException: This exception has no message.

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This exception has no message.
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This exception has no message.
java.lang.NullPointerException:
at com.sun.jna.Native.getNativeSize(Native.java:1162)
at com.sun.jna.Structure.getNativeAlignment(Structure.java:1360)
at com.sun.jna.Structure.getNativeAlignment(Structure.java:1385)
at com.sun.jna.Structure.deriveLayout(Structure.java:1221)
at com.sun.jna.Structure.calculateSize(Structure.java:1053)
at com.sun.jna.Structure.allocateMemory(Structure.java:380)
at com.sun.jna.Structure.ensureAllocated(Structure.java:356)
at com.sun.jna.Structure.ensureAllocated(Structure.java:346)
at com.sun.jna.Structure.write(Structure.java:737)
at com.sun.jna.Structure.autoWrite(Structure.java:2047)
at com.sun.jna.Function.convertArgument(Function.java:512)
at com.sun.jna.Function.invoke(Function.java:305)
at com.sun.proxy.$Proxy0.SolveBoard(Unknown Source)
at undefined.DllAl.main(DllAl.java:98)

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