Error Occured When Completing tasks

[raveera]

I got a problem when completing tasks using form data.I double check everything I couldn't figure what the problem is.
Can someone please show me the error

String taskId = request.getParameter("taskId").toString();
List<FormProperty> formPropList = formService.getTaskFormData(taskId).getFormProperties();
Map<String, String> properties = new HashMap<String, String>();
            for (FormProperty formProperty : formPropList) {
                properties.put(formProperty.getId(), request.getParameter(formProperty.getId()));                
            }
formService.submitTaskFormData(taskId, properties);    
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This is the the tomcat logger

Aug 23, 2014 12:35:21 PM org.activiti.engine.impl.bpmn.deployer.BpmnDeployer deploy
INFO: Processing resource DocumentApprove140821.bpmn
Aug 23, 2014 12:35:22 PM org.activiti.engine.impl.bpmn.deployer.BpmnDeployer deploy
INFO: Processing resource DocumentApprove140821.myProcess.png
Exception in thread "main" org.apache.ibatis.exceptions.PersistenceException: 
### Error querying database.  Cause: org.apache.ibatis.reflection.ReflectionException: Could not set property 'byteArrayRef' of 'VariableInstanceEntity[id=19105, name=docId, type=string]' with value 'ByteArrayRef[id=null, name=null, entity=null]' Cause: org.apache.ibatis.reflection.ReflectionException: There is no setter for property named 'byteArrayRef' in 'class org.activiti.engine.impl.persistence.entity.VariableInstanceEntity'
### The error may involve org.activiti.engine.impl.persistence.entity.VariableInstanceEntity.selectVariablesByExecutionId-Inline
### The error occurred while setting parameters
### Cause: org.apache.ibatis.reflection.ReflectionException: Could not set property 'byteArrayRef' of 'VariableInstanceEntity[id=19105, name=docId, type=string]' with value 'ByteArrayRef[id=null, name=null, entity=null]' Cause: org.apache.ibatis.reflection.ReflectionException: There is no setter for property named 'byteArrayRef' in 'class org.activiti.engine.impl.persistence.entity.VariableInstanceEntity'
   at org.apache.ibatis.exceptions.ExceptionFactory.wrapException(ExceptionFactory.java:8)
   at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:61)
   at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:53)
   at org.activiti.engine.impl.db.DbSqlSession.selectListWithRawParameter(DbSqlSession.java:305)
   at org.activiti.engine.impl.db.DbSqlSession.selectList(DbSqlSession.java:296)
   at org.activiti.engine.impl.db.DbSqlSession.selectList(DbSqlSession.java:291)
   at org.activiti.engine.impl.db.DbSqlSession.selectList(DbSqlSession.java:272)
   at org.activiti.engine.impl.persistence.entity.VariableInstanceEntityManager.findVariableInstancesByExecutionId(VariableInstanceEntityManager.java:34)
   at org.activiti.engine.impl.persistence.entity.ExecutionEntity.loadVariableInstances(ExecutionEntity.java:1036)
   at org.activiti.engine.impl.persistence.entity.VariableScopeImpl.ensureVariableInstancesInitialized(VariableScopeImpl.java:63)
   at org.activiti.engine.impl.persistence.entity.VariableScopeImpl.hasVariableLocal(VariableScopeImpl.java:138)
   at org.activiti.engine.impl.persistence.entity.VariableScopeImpl.setVariable(VariableScopeImpl.java:244)
   at org.activiti.engine.impl.persistence.entity.VariableScopeImpl.setVariable(VariableScopeImpl.java:240)
   at org.activiti.engine.impl.form.FormPropertyHandler.submitFormProperty(FormPropertyHandler.java:110)
   at org.activiti.engine.impl.form.DefaultFormHandler.submitFormProperties(DefaultFormHandler.java:97)
   at org.activiti.engine.impl.cmd.SubmitTaskFormCmd.execute(SubmitTaskFormCmd.java:47)
   at org.activiti.engine.impl.cmd.NeedsActiveTaskCmd.execute(NeedsActiveTaskCmd.java:61)
   at org.activiti.engine.impl.interceptor.CommandInvoker.execute(CommandInvoker.java:24)
   at org.activiti.engine.impl.interceptor.CommandContextInterceptor.execute(CommandContextInterceptor.java:57)
   at org.activiti.spring.SpringTransactionInterceptor$1.doInTransaction(SpringTransactionInterceptor.java:47)
   at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:130)
   at org.activiti.spring.SpringTransactionInterceptor.execute(SpringTransactionInterceptor.java:45)
   at org.activiti.engine.impl.interceptor.LogInterceptor.execute(LogInterceptor.java:31)
   at org.activiti.engine.impl.cfg.CommandExecutorImpl.execute(CommandExecutorImpl.java:40)
   at org.activiti.engine.impl.cfg.CommandExecutorImpl.execute(CommandExecutorImpl.java:35)
   at org.activiti.engine.impl.FormServiceImpl.submitTaskFormData(FormServiceImpl.java:70)
   at com.aura.web.WorkFlowTest.main(WorkFlowTest.java:50)
Caused by: org.apache.ibatis.reflection.ReflectionException: Could not set property 'byteArrayRef' of 'VariableInstanceEntity[id=19105, name=docId, type=string]' with value 'ByteArrayRef[id=null, name=null, entity=null]' Cause: org.apache.ibatis.reflection.ReflectionException: There is no setter for property named 'byteArrayRef' in 'class org.activiti.engine.impl.persistence.entity.VariableInstanceEntity'
   at org.apache.ibatis.reflection.wrapper.BeanWrapper.setBeanProperty(BeanWrapper.java:154)
   at org.apache.ibatis.reflection.wrapper.BeanWrapper.set(BeanWrapper.java:36)
   at org.apache.ibatis.reflection.MetaObject.setValue(MetaObject.java:120)
   at org.apache.ibatis.executor.resultset.FastResultSetHandler.applyPropertyMappings(FastResultSetHandler.java:224)
   at org.apache.ibatis.executor.resultset.FastResultSetHandler.getRowValue(FastResultSetHandler.java:196)
   at org.apache.ibatis.executor.resultset.FastResultSetHandler.handleRowValues(FastResultSetHandler.java:145)
   at org.apache.ibatis.executor.resultset.FastResultSetHandler.handleResultSet(FastResultSetHandler.java:121)
   at org.apache.ibatis.executor.resultset.FastResultSetHandler.handleResultSets(FastResultSetHandler.java:98)
   at org.apache.ibatis.executor.statement.PreparedStatementHandler.query(PreparedStatementHandler.java:40)
   at org.apache.ibatis.executor.statement.RoutingStatementHandler.query(RoutingStatementHandler.java:55)
   at org.apache.ibatis.executor.SimpleExecutor.doQuery(SimpleExecutor.java:41)
   at org.apache.ibatis.executor.BaseExecutor.query(BaseExecutor.java:94)
   at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:72)
   at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:59)
   … 25 more
Caused by: org.apache.ibatis.reflection.ReflectionException: There is no setter for property named 'byteArrayRef' in 'class org.activiti.engine.impl.persistence.entity.VariableInstanceEntity'
   at org.apache.ibatis.reflection.Reflector.getSetInvoker(Reflector.java:300)
   at org.apache.ibatis.reflection.MetaClass.getSetInvoker(MetaClass.java:97)
   at org.apache.ibatis.reflection.wrapper.BeanWrapper.setBeanProperty(BeanWrapper.java:146)
   … 38 more
Java Result: 1

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But i can Successfully start process instances by passing starting form data.It doesn't give any error.Why is above error getting occurred when completing tasks?
This is the Starting process instance data code.It works fine

List<FormProperty> formPropList = formService.getStartFormData(pdefId).getFormProperties();
            Map<String, String> properties = new HashMap<String, String>();
            for (FormProperty formProperty : formPropList) {

                properties.put(formProperty.getId(), request.getParameter(formProperty.getId()));
                
            }
            formService.submitStartFormData(pdefId, properties);
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[jbarrez]

Which version of Activiti?

What is the variable (form value) type you are trying to submit?

[raveera]

Thanks for the reply it was solved.It was because existing project had contained a previous version of iBatis jar file.After removing that it works fine.