java.lang.NullPointerException

at com.jeelowcode.core.flow.service.impl.JeeLowCodeBpmWorkspaceServiceImpl.addMultiButton(JeeLowCodeBpmWorkspaceServiceImpl.java:873)

at com.jeelowcode.core.flow.service.impl.JeeLowCodeBpmWorkspaceServiceImpl$$FastClassBySpringCGLIB$$61aa932e.invoke(<generated>)

at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218)

at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:792)

at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163)

at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:762)

at org.springframework.aop.aspectj.MethodInvocationProceedingJoinPoint.proceed(MethodInvocationProceedingJoinPoint.java:89)

at com.jeelowcode.core.flow.config.aspect.FlowAspect.aroudAdvice(FlowAspect.java:36)

at sun.reflect.GeneratedMethodAccessor118.invoke(Unknown Source)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

at java.lang.reflect.Method.invoke(Unknown Source)