Use these steps to resolve broken wires on your diagram.
A broken wire indicates that dataflow is not valid between the data source and the node to which it is wired. You cannot run code that contains broken wires.
Try triple-clicking the wire. When the entire wire is selected, do you see any hidden wire segments that help you identify one of the causes listed above?
Try using the error list to find broken wires and a possible explanation.
If you still can't identify the cause of the broken wire, use the Remove Broken Wires operation in LabVIEW.
Removing all broken wires on the diagram or in a selection can have unintended consequences. LabVIEW removes all broken wires, even those you might not see. For example, you might delete a broken wire in code that you have not finished wiring yet, or you might delete a wire to a shift register and get no error even though the VI does not work as expected.