The crane doesn't take the products into the warehouse storage

In my simulation, the products don’t go into the warehouse. The crane doesn’t respond. It used to work before but for some reason, it isn’t working anymore. I am using the “From conveyer node” at the end of conveyer where the blue boxes in the pallet are picked up from to be stored away to warehouse.

The product belongs to the same flow group.

Initially the leftmost crane used to pickup the product into warehouse. But now it doesn’t.
The process statements are normal ones(From component container to next process).

And at the end of 1 hour of simulation run time, even other products aren’t picked up by the crane anymore(The ones in creme color at the bottom level).

Is there a common reason why this might happen? It used to work but now after building more flows, the crane doesn’t like taking this particular product.