Where and how to change postgres listen port on gitlab ce

I have this error in my tail log

[2019-11-20T08:32:19.248843 #19389] ERROR – : adding listener failed addr= (in use)
Errno::EADDRINUSE: Address already in use - bind(2) for

I tried changing the listen port in the gitlab.rb file to

postgresql[‘listen_address’] = “”

yet it is still throwing the same error