Found the solution which was to include metadata.xml and add following code and after that it started working.
<?xml version="1.0" encoding="UTF-8"?>
<metadata>
<remove-node path="/api/package[@name='com.sun.jna']/class[@name='JNIEnv']"/>
<remove-node path="/api/package[@name='com.sun.jna']/class[@name='Pointer']/field[@name='NULL']"/>
</metadata>