How to deal with "Launch neo4j failed: localhost address: 7687 is already in use"?

Question

I am using Neo4j Community Edition 3.1.1 on Mac OS X Sierra. Whenever I try to run Neo4j locally through

neo4j start

I get the following:

Starting Neo4j failed: Component 'org.neo4j.server.database.LifecycleManagingDatabase@a8ba98d' was successfully initialized, but failed to start. 
Please see attached cause exception.

with the following exception in the tail / usr / local / Cellar / neo 4j / 3.1.1 / libexec / logs / neo4j.log

Caused by: org.neo4j.helpers.PortBindException: Address localhost:7687 is already in use, cannot bind to it.

I tried to run

lsof -i -n -P | grep 7687

but he returned empty.

Please inform.