Input model 1_2.fsmI'm having trouble processing How do I fix it?
An invalid task has been encountered - invalid pointer
FlexSim 22.1.4
The 'CB' forklift is getting a task to move an item that no longer exists. Below I describe the sequence of events that lead to this.
1. At 4800s, a batch of items is created in the queue and pushed to the 'Product' list.
2. In the Process Flow, a token is waiting to pull an item of type 4 which it can now do.
3. The 'OP' forklift is starting to move to the source to pick this item up.
4. The created items are moved to the 'Load' queue that looks like a truck. Task sequences to move them to 'Queue1' are generated.
5. The aforementioned type 4 item is transported to Queue7 and vanishes in the sink.
6. Some time later the task sequence that was generated by the 'Load' queue is dispatched and causes the error because the item no longer exists.
To fix: Make sure to only push the items to the list when all initial transports are already complete to prevent conflicts like this.
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