As shown in the picture, after searching for a long time, I still can’t solve it. Why does it keep failing? I'm a noob, please give me some answers. 
Additional: After looking at the port occupancy, why are there two?
迷茫2017-05-16 17:18:35
The first 8080 is used,
The second one requires elevated privileges.
Generally, as long as the port is not in use, it can be bound.
Supplement:
The mac system will install apache by default and run port 8080.
迷茫2017-05-16 17:18:35
Is nginx already started? If you start it again, there will be a conflict. reload
Ports below 1024 require root permissions, change 1001 to a port greater than 1024
