how should i use dispatcher with two operators?

[leeeeee]

[ FlexSim 22.2.0 ]

im already set up a dispatcher and use output ports connections to operators, but operators will stuck in processor at the middle of the time suddenly, and the system console shows the error：

time: 861.724163 exception: Exception Caught in Processor::onTimerEvent(treenode involved, int code, char *datastr) object: /擺料

time: 861.724163 exception: Exception Caught in ObjectFunction250__project_library_FlexSimObject_behaviour_eventfunctions_OnTimerEvent object: /擺料 class: /擺料

time: 861.724163 exception: Exception caught in TreeNode::receivemessage()

time: 861.724163 exception: Exception caught in Executive::processeventinlist().

改善_多加煮麵師傅.fsm