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Not able to understand the following error when ATK panel opened. Help me understand this error, also help me fix it.
ERROR 2017-09-02 14:04:49,411 [RequestProcessor-6 - a/b/dytest] org.tango.utils.DevFailedUtils.throwDevFailed:81 - throwing DevFailed from
java.lang.NullPointerException: null
at org.tango.server.cache.TangoCacheManager.getAttributeCache(TangoCacheManager.java:404) ~[JTango-9.3.2.jar:na]
at org.tango.server.cache.PollingManager.getAttributeCacheElement(PollingManager.java:385) ~[JTango-9.3.2.jar:na]
at org.tango.server.servant.AttributeGetterSetter.getAttributesValues5(AttributeGetterSetter.java:220) ~[JTango-9.3.2.jar:na]
at org.tango.server.servant.DeviceImpl.read_attributes_5(DeviceImpl.java:1203) ~[JTango-9.3.2.jar:na]
at fr.esrf.Tango.Device_5POA._invoke(Device_5POA.java:310) [JTango-9.3.2.jar:na]
at org.jacorb.poa.RequestProcessor.invokeOperation(RequestProcessor.java:402) [JTango-9.3.2.jar:na]
at org.jacorb.poa.RequestProcessor.process(RequestProcessor.java:726) [JTango-9.3.2.jar:na]
at org.jacorb.poa.RequestProcessor.run(RequestProcessor.java:884) [JTango-9.3.2.jar:na]
ERROR 2017-09-02 14:04:49,418 [RequestProcessor-6 - a/b/dytest] org.tango.utils.DevFailedUtils.throwDevFailed:81 - throwing DevFailed from
java.lang.NullPointerException: null
at org.tango.server.cache.TangoCacheManager.getAttributeCache(TangoCacheManager.java:404) ~[JTango-9.3.2.jar:na]
at org.tango.server.cache.PollingManager.getAttributeCacheElement(PollingManager.java:385) ~[JTango-9.3.2.jar:na]
at org.tango.server.servant.AttributeGetterSetter.getAttributesValues5(AttributeGetterSetter.java:220) ~[JTango-9.3.2.jar:na]
at org.tango.server.servant.DeviceImpl.read_attributes_5(DeviceImpl.java:1203) ~[JTango-9.3.2.jar:na]
at fr.esrf.Tango.Device_5POA._invoke(Device_5POA.java:310) [JTango-9.3.2.jar:na]
at org.jacorb.poa.RequestProcessor.invokeOperation(RequestProcessor.java:402) [JTango-9.3.2.jar:na]
at org.jacorb.poa.RequestProcessor.process(RequestProcessor.java:726) [JTango-9.3.2.jar:na]
at org.jacorb.poa.RequestProcessor.run(RequestProcessor.java:884) [JTango-9.3.2.jar:na]
ERROR 2017-09-02 14:04:49,589 [RequestProcessor-6 - a/b/dytest] org.tango.utils.DevFailedUtils.throwDevFailed:81 - throwing DevFailed from
java.lang.NullPointerException: null
at org.tango.server.cache.TangoCacheManager.getAttributeCache(TangoCacheManager.java:404) ~[JTango-9.3.2.jar:na]
at org.tango.server.cache.PollingManager.getAttributeCacheElement(PollingManager.java:385) ~[JTango-9.3.2.jar:na]
at org.tango.server.servant.AttributeGetterSetter.getAttributesValues5(AttributeGetterSetter.java:220) ~[JTango-9.3.2.jar:na]
at org.tango.server.servant.DeviceImpl.read_attributes_5(DeviceImpl.java:1203) ~[JTango-9.3.2.jar:na]
at fr.esrf.Tango.Device_5POA._invoke(Device_5POA.java:310) [JTango-9.3.2.jar:na]
at org.jacorb.poa.RequestProcessor.invokeOperation(RequestProcessor.java:402) [JTango-9.3.2.jar:na]
at org.jacorb.poa.RequestProcessor.process(RequestProcessor.java:726) [JTango-9.3.2.jar:na]
at org.jacorb.poa.RequestProcessor.run(RequestProcessor.java:884) [JTango-9.3.2.jar:na]
ERROR 2017-09-02 14:04:49,600 [RequestProcessor-6 - a/b/dytest] org.tango.utils.DevFailedUtils.throwDevFailed:81 - throwing DevFailed from
java.lang.NullPointerException: null
at org.tango.server.cache.TangoCacheManager.getAttributeCache(TangoCacheManager.java:404) ~[JTango-9.3.2.jar:na]
at org.tango.server.cache.PollingManager.getAttributeCacheElement(PollingManager.java:385) ~[JTango-9.3.2.jar:na]
at org.tango.server.servant.AttributeGetterSetter.getAttributesValues5(AttributeGetterSetter.java:220) ~[JTango-9.3.2.jar:na]
at org.tango.server.servant.DeviceImpl.read_attributes_5(DeviceImpl.java:1203) ~[JTango-9.3.2.jar:na]
at fr.esrf.Tango.Device_5POA._invoke(Device_5POA.java:310) [JTango-9.3.2.jar:na]
at org.jacorb.poa.RequestProcessor.invokeOperation(RequestProcessor.java:402) [JTango-9.3.2.jar:na]
at org.jacorb.poa.RequestProcessor.process(RequestProcessor.java:726) [JTango-9.3.2.jar:na]
at org.jacorb.poa.RequestProcessor.run(RequestProcessor.java:884) [JTango-9.3.2.jar:na]
ERROR 2017-09-02 14:04:49,606 [RequestProcessor-6 - a/b/dytest] org.tango.utils.DevFailedUtils.throwDevFailed:81 - throwing DevFailed from
java.lang.NullPointerException: null
at org.tango.server.cache.TangoCacheManager.getAttributeCache(TangoCacheManager.java:404) ~[JTango-9.3.2.jar:na]
at org.tango.server.cache.PollingManager.getAttributeCacheElement(PollingManager.java:385) ~[JTango-9.3.2.jar:na]
at org.tango.server.servant.AttributeGetterSetter.getAttributesValues5(AttributeGetterSetter.java:220) ~[JTango-9.3.2.jar:na]
at org.tango.server.servant.DeviceImpl.read_attributes_5(DeviceImpl.java:1203) ~[JTango-9.3.2.jar:na]
at fr.esrf.Tango.Device_5POA._invoke(Device_5POA.java:310) [JTango-9.3.2.jar:na]
at org.jacorb.poa.RequestProcessor.invokeOperation(RequestProcessor.java:402) [JTango-9.3.2.jar:na]
at org.jacorb.poa.RequestProcessor.process(RequestProcessor.java:726) [JTango-9.3.2.jar:na]
at org.jacorb.poa.RequestProcessor.run(RequestProcessor.java:884) [JTango-9.3.2.jar:na]
ERROR 2017-09-02 14:04:49,611 [RequestProcessor-6 - a/b/dytest] org.tango.utils.DevFailedUtils.throwDevFailed:81 - throwing DevFailed from
java.lang.NullPointerException: null
at org.tango.server.cache.TangoCacheManager.getAttributeCache(TangoCacheManager.java:404) ~[JTango-9.3.2.jar:na]
at org.tango.server.cache.PollingManager.getAttributeCacheElement(PollingManager.java:385) ~[JTango-9.3.2.jar:na]
at org.tango.server.servant.AttributeGetterSetter.getAttributesValues5(AttributeGetterSetter.java:220) ~[JTango-9.3.2.jar:na]
at org.tango.server.servant.DeviceImpl.read_attributes_5(DeviceImpl.java:1203) ~[JTango-9.3.2.jar:na]
at fr.esrf.Tango.Device_5POA._invoke(Device_5POA.java:310) [JTango-9.3.2.jar:na]
at org.jacorb.poa.RequestProcessor.invokeOperation(RequestProcessor.java:402) [JTango-9.3.2.jar:na]
at org.jacorb.poa.RequestProcessor.process(RequestProcessor.java:726) [JTango-9.3.2.jar:na]
at org.jacorb.poa.RequestProcessor.run(RequestProcessor.java:884) [JTango-9.3.2.jar:na]
Regards, TCS_GMRT
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