nginx bind failed

Question

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?

Answer 1

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.

Answer 2

1. Is nginx already started? If you start it again, there will be a conflict. reload

2. Ports below 1024 require root permissions, change 1001 to a port greater than 1024