1
 2Caused by: com.thoughtworks.xstream.converters.ConversionException: null : null
 3---- Debugging information ----
 4cause-exception     : java.lang.NullPointerException
 5cause-message       : null
 6class               : com.liferay.portal.model.impl.LayoutImpl
 7required-type       : org.apache.commons.lang.time.FastDateFormat
 8path                : /com.liferay.portal.model.impl.LayoutImpl/_layoutType/_dateFormat
 9line number         : 93
10-------------------------------
11    at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:89)
12    at com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:63)
13    at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:76)
14    at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshallField(AbstractReflectionConverter.java:246)
15    at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doUnmarshal(AbstractReflectionConverter.java:218)
16    at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshal(AbstractReflectionConverter.java:162)
17    at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:82)
18    at com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:63)
19    at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:76)
20    at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshallField(AbstractReflectionConverter.java:246)
21    at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doUnmarshal(AbstractReflectionConverter.java:218)
22    at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshal(AbstractReflectionConverter.java:162)
23    at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:82)
24    at com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:63)
25    at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:76)
26    at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:60)
27    at com.thoughtworks.xstream.core.TreeUnmarshaller.start(TreeUnmarshaller.java:137)
28    at com.thoughtworks.xstream.core.AbstractTreeMarshallingStrategy.unmarshal(AbstractTreeMarshallingStrategy.java:33)
29    at com.thoughtworks.xstream.XStream.unmarshal(XStream.java:923)
30    at com.thoughtworks.xstream.XStream.unmarshal(XStream.java:909)
31    at com.thoughtworks.xstream.XStream.fromXML(XStream.java:853)
32    at com.thoughtworks.xstream.XStream.fromXML(XStream.java:845)
33    at com.liferay.portal.lar.PortletDataContextImpl.fromXML(PortletDataContextImpl.java:667)
34    at com.liferay.portal.lar.PortletDataContextImpl.getZipEntryAsObject(PortletDataContextImpl.java:854)
35    at com.liferay.portal.lar.LayoutImporter.importLayout(LayoutImporter.java:836)
36    at com.liferay.portal.lar.LayoutImporter.doImportLayouts(LayoutImporter.java:489)
37    at com.liferay.portal.lar.LayoutImporter.importLayouts(LayoutImporter.java:140)
38    at com.liferay.portal.service.impl.LayoutLocalServiceImpl.importLayouts(LayoutLocalServiceImpl.java:1369)
39    ... 168 more
40Caused by: java.lang.NullPointerException
41    at java.util.concurrent.ConcurrentHashMap.get(ConcurrentHashMap.java:922)
42    at java.text.DateFormatSymbols.initializeData(DateFormatSymbols.java:654)
43    at java.text.DateFormatSymbols.<init>(DateFormatSymbols.java:141)
44    at org.apache.commons.lang.time.FastDateFormat.parsePattern(FastDateFormat.java:578)
45    at org.apache.commons.lang.time.FastDateFormat.init(FastDateFormat.java:558)
46    at org.apache.commons.lang.time.FastDateFormat.readObject(FastDateFormat.java:1029)
47    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
48    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
49    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
50    at java.lang.reflect.Method.invoke(Method.java:601)
51    at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1004)
52    at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1866)
53    at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1771)
54    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1347)
55    at java.io.ObjectInputStream.readObject(ObjectInputStream.java:369)
56    at com.thoughtworks.xstream.converters.reflection.PureJavaReflectionProvider.instantiateUsingSerialization(PureJavaReflectionProvider.java:112)
57    at com.thoughtworks.xstream.converters.reflection.PureJavaReflectionProvider.newInstance(PureJavaReflectionProvider.java:69)
58    at com.thoughtworks.xstream.converters.reflection.ReflectionProviderWrapper.newInstance(ReflectionProviderWrapper.java:42)
59    at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.instantiateNewInstance(AbstractReflectionConverter.java:308)
60    at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshal(AbstractReflectionConverter.java:161)
61    at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:82)
62    ... 195 more