在 Windchill PartsLink 的高级搜索页面选择分类节点后，收到“发生意外错误”的提示。

• 接收 Windchill 错误，错误代码 501 在高级搜索页面选择零件类型时，请在高级搜索中打开该页面。
• 在高级搜索页面上选择特定分类节点后，收到 Windchill 错误“发生意外错误。 ”
• 点击“分类浏览器”时出现以下错误弹出窗口

  An unexpected error has occurred.  Contact your system administrator for assistance

• Windchill 错误，错误代码 501 在高级搜索中选择特定分类节点时发生的情况
• 当在分类页面内进行搜索时，用户在高级搜索页面会看到以下错误：

   Windchill Error
  Contact your administrator for assistance. Information for their reference follows.
  Request Id:        <customer specific request ID>
  Request URI:      /PDMLink/ptc1/queryBuilder
  Query String:     typeChanged=true
  Status Code:      501
  Message:            An unexpected error has occurred. Contact your system administrator for assistance.

• 方法服务器日志中出现错误：

 com.ptc.mvc.controllers.ExceptionController xxx- message : Cannot invoke "com.ptc.core.lwc.common.view.ConstraintDefinitionReadView$RuleDataObject.getEnumDef()" because "<localxx>" is null error:-------------wt.util.WTException: Cannot invoke "com.ptc.core.lwc.common.view.ConstraintDefinitionReadView$RuleDataObject.getEnumDef()" because "<localxx>" is null wt.util.WTException: Cannot invoke "com.ptc.core.lwc.common.view.ConstraintDefinitionReadView$RuleDataObject.getEnumDef()" because "<localxx>" is null at com.ptc.windchill.enterprise.search.mvc.controllers.AngularQueryBuilderController.doWork(AngularQueryBuilderController.java:179) at com.ptc.windchill.enterprise.search.mvc.controllers.AngularQueryBuilderController.renderQueryBuilder(AngularQueryBuilderController.java:66) at jdk.internal.reflect.GeneratedMethodAccessor1134.invoke(Unknown Source) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:568) at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:205) at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:150) at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:117) at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:895) at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:808) at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1072)

 ERROR com.ptc.windchill.enterprise.search.mvc.helpers.AngularQueryBuilderHelper USER_Name - Exception while creating the QB attribute Json String from attrInfoCollection
ERROR com.ptc.mvc.controllers.ExceptionController USER_Name - message : An unexpected error has occurred.  Contact your system administrator for assistance.
error:-------------wt.util.WTException wt.util.WTException
	at com.ptc.windchill.enterprise.search.mvc.controllers.AngularQueryBuilderController.doWork(AngularQueryBuilderController.java:173)
	at com.ptc.windchill.enterprise.search.mvc.controllers.AngularQueryBuilderController.renderQueryBuilder(AngularQueryBuilderController.java:66)
	at jdk.internal.reflect.GeneratedMethodAccessor2789.invoke(Unknown Source)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:566)
	at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:190)
	...