Caused by: org.activiti.bpmn.exceptions.XMLException: src-resolve: 无法将名称 'extension' 解析为 'element declaration'  组件。
        at org.activiti.bpmn.converter.BpmnXMLConverter.convertToBpmnModel(BpmnXMLConverter.java:280)
        at org.activiti.engine.impl.bpmn.parser.BpmnParse.execute(BpmnParse.java:148)
        at org.activiti.engine.impl.bpmn.deployer.ParsedDeploymentBuilder.createBpmnParseFromResource(ParsedDeploymentBuilder.java:96)
        at org.activiti.engine.impl.bpmn.deployer.ParsedDeploymentBuilder.build(ParsedDeploymentBuilder.java:55)
        at org.activiti.engine.impl.bpmn.deployer.BpmnDeployer.deploy(BpmnDeployer.java:66)
        at org.activiti.engine.impl.persistence.deploy.DeploymentManager.deploy(DeploymentManager.java:58)
        at org.activiti.engine.impl.cmd.DeployCmd.executeDeploy(DeployCmd.java:97)
        at org.activiti.engine.impl.cmd.DeployCmd.execute(DeployCmd.java:47)
        at org.activiti.engine.impl.cmd.DeployCmd.execute(DeployCmd.java:37)
        at org.activiti.engine.impl.interceptor.CommandInvoker$1.run(CommandInvoker.java:37)
        at org.activiti.engine.impl.interceptor.CommandInvoker.executeOperation(CommandInvoker.java:78)
        at org.activiti.engine.impl.interceptor.CommandInvoker.executeOperations(CommandInvoker.java:57)
        at org.activiti.engine.impl.interceptor.CommandInvoker.execute(CommandInvoker.java:42)
        at org.activiti.engine.impl.interceptor.TransactionContextInterceptor.execute(TransactionContextInterceptor.java:48)
        at org.activiti.engine.impl.interceptor.CommandContextInterceptor.execute(CommandContextInterceptor.java:59)
        at org.activiti.spring.SpringTransactionInterceptor$1.doInTransaction(SpringTransactionInterceptor.java:47)
        at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:140)
        at org.activiti.spring.SpringTransactionInterceptor.execute(SpringTransactionInterceptor.java:45)
        at org.activiti.engine.impl.interceptor.LogInterceptor.execute(LogInterceptor.java:29)
        at org.activiti.engine.impl.cfg.CommandExecutorImpl.execute(CommandExecutorImpl.java:44)
        at org.activiti.engine.impl.cfg.CommandExecutorImpl.execute(CommandExecutorImpl.java:39)
        at org.activiti.engine.impl.RepositoryServiceImpl.deploy(RepositoryServiceImpl.java:82)
        at org.activiti.engine.impl.repository.DeploymentBuilderImpl.deploy(DeploymentBuilderImpl.java:218)
        at org.activiti.spring.autodeployment.DefaultAutoDeploymentStrategy.deployResources(DefaultAutoDeploymentStrategy.java:52)
        at org.activiti.spring.SpringProcessEngineConfiguration.autoDeployResources(SpringProcessEngineConfiguration.java:119)
        at org.activiti.spring.SpringProcessEngineConfiguration.buildProcessEngine(SpringProcessEngineConfiguration.java:72)
        at org.activiti.spring.ProcessEngineFactoryBean.getObject(ProcessEngineFactoryBean.java:57)
        at org.activiti.spring.ProcessEngineFactoryBean.getObject(ProcessEngineFactoryBean.java:32)
        at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.doGetObjectFromFactoryBean(FactoryBeanRegistrySupport.java:169)
        ... 51 common frames omitted
Caused by: org.xml.sax.SAXParseException: src-resolve: 无法将名称 'extension' 解析为 'element declaration' 组件。
        at java.xml/com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(ErrorHandlerWrapper.java:204)
        at java.xml/com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.error(ErrorHandlerWrapper.java:135)
        at java.xml/com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:396)
        at java.xml/com.sun.org.apache.xerces.internal.impl.xs.traversers.XSDHandler.reportSchemaErr(XSDHandler.java:4254)
        at java.xml/com.sun.org.apache.xerces.internal.impl.xs.traversers.XSDHandler.reportSchemaError(XSDHandler.java:4237)
        at java.xml/com.sun.org.apache.xerces.internal.impl.xs.traversers.XSDHandler.getGlobalDecl(XSDHandler.java:1791)
        at java.xml/com.sun.org.apache.xerces.internal.impl.xs.traversers.XSDElementTraverser.traverseLocal(XSDElementTraverser.java:170)
        at java.xml/com.sun.org.apache.xerces.internal.impl.xs.traversers.XSDHandler.traverseLocalElements(XSDHandler.java:3707)
        at java.xml/com.sun.org.apache.xerces.internal.impl.xs.traversers.XSDHandler.parseSchema(XSDHandler.java:666)
        at java.xml/com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaLoader.loadSchema(XMLSchemaLoader.java:618)
        at java.xml/com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaLoader.loadGrammar(XMLSchemaLoader.java:577)
        at java.xml/com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaLoader.loadGrammar(XMLSchemaLoader.java:543)
        at java.xml/com.sun.org.apache.xerces.internal.jaxp.validation.XMLSchemaFactory.newSchema(XMLSchemaFactory.java:281)
        at java.xml/javax.xml.validation.SchemaFactory.newSchema(SchemaFactory.java:612)
        at java.xml/javax.xml.validation.SchemaFactory.newSchema(SchemaFactory.java:644)
        at org.activiti.bpmn.converter.BpmnXMLConverter.createSchema(BpmnXMLConverter.java:232)
        at org.activiti.bpmn.converter.BpmnXMLConverter.validateModel(BpmnXMLConverter.java:211)
        at org.activiti.bpmn.converter.BpmnXMLConverter.convertToBpmnModel(BpmnXMLConverter.java:269)
        ... 79 common frames omitted