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java.lang.NullPointerException: 	at java.lang.reflect.Array.getLength(Native Method)	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.jna.Library$Handler.invoke(Library.java:236)	at com.sun.proxy.$Proxy0.SolveBoard(Unknown Source)	at DllAl.main(DllAl.java:98)