Provider com.bea.xml.stream.EventFactory not found

[gulabsagevadiya]

I am getting this error. i have used your lib in to my app. Do you have any idea about this error ?

org.apache.poi.javax.xml.stream.FactoryConfigurationError: Provider com.bea.xml.stream.EventFactory not found
at org.apache.poi.javax.xml.stream.FactoryFinder.newInstance(FactoryFinder.java:72)
at org.apache.poi.javax.xml.stream.FactoryFinder.find(FactoryFinder.java:178)
at org.apache.poi.javax.xml.stream.FactoryFinder.find(FactoryFinder.java:92)
at org.apache.poi.javax.xml.stream.XMLEventFactory.newInstance(XMLEventFactory.java:30)
at org.apache.poi.openxml4j.opc.internal.marshallers.PackagePropertiesMarshaller.(PackagePropertiesMarshaller.java:41)
at org.apache.poi.openxml4j.opc.OPCPackage.init(OPCPackage.java:161)
at org.apache.poi.openxml4j.opc.OPCPackage.(OPCPackage.java:141)
at org.apache.poi.openxml4j.opc.ZipPackage.(ZipPackage.java:97)
at org.apache.poi.openxml4j.opc.OPCPackage.open(OPCPackage.java:324)
at org.apache.poi.util.PackageHelper.open(PackageHelper.java:37)