Single Pin In Net error

[infinitemach]

When I try to validate my schematic I am getting this error. I tried removing the net and reconstructing it, but the error will not go away. What does this error mean?

I want the net to connect to ground.

SinglePinInNet.png (29.66 KiB) Viewed 33351 times

[Alex]

The wire from the U6 pin 3 is going to nowhere. If you convert the schematic to PCB the net won't exist because a net with single pin doesn't make sense.