Wabacus统计java.lang.VerifyError错误解决

java.lang.VerifyError: (class: com/wabacus/reportpojo/Pojo_report_Areareport1_subdisplay, method: format signature: (Lcom/wabacus/system/ReportRequest;Lcom/wabacus/config/component/application/report/ReportBean;Ljava/lang/St<subdisplay> 
    <statitems><!-- 定义要用到的统计项 --> 
     <statitem property="item1" value="sum(number1)" datatype="int"></statitem> 
     <statitem property="item2" value="sum(number2)" datatype="int"></statitem>  
    </statitems>  
    <subrow displaytype="page|report">  
     <subcol property="sprop1" colspan="2" valuestyleproperty="bgcolor='#CCFAFF' align='right'"></subcol>  
     <subcol property="sprop2" colspan="1" valuestyleproperty="bgcolor='#CCFAFF' align='right'"></subcol>  
     <subcol property="sprop3" colspan="1" valuestyleproperty="bgcolor='#CCFAFF' align='right'"></subcol>    
    </subrow>  
    <format> 
     <imports>  
      <import>com.wabacus.system.format.*</import>  
     </imports>  
     <value>  
<![CDATA[  
sprop1="统计"; 
sprop2=item1;  
sprop3=item2;  
]]>  
</value>  
    </format>  
   </subdisplay>ring;)V) Bad type in putfield/putstaticWabacus