Receiver Results Empty

# Context
I am using iPerf to test the connection between two servers, when doing so I receive no receiver results (Reverse) or sender results (normal).
Why does client show both set of results but the server only displays on set?
[iPerf Server Results.txt](https://github.com/esnet/iperf/files/1907132/iPerf.Server.Results.txt)
[iPerf Client Results.txt](https://github.com/esnet/iperf/files/1907133/iPerf.Client.Results.txt)

* Version of iperf3:
iPerf 3.1.7 both servers.

* Hardware:
These are machines from AWS I am using to test from work. These are t2.micro servers with the below OS.

* Operating system (and distribution, if any):
RHEL-7.5_HVM_GA-20180322-x86_64-1-Hourly2-GP2 (ami-7c1bfd1b)

* Other relevant information (for example, non-default compilers,
libraries, cross-compiling, etc.):
All traffic is allowed between the two servers.
Installed using YUM.

# Bug Report
I am not seeing any receiver results if put in reverse mode or sender results if in normal.
I used the below commands.
iperf3 -s -p 24002 -V
iperf3 -c -R -i 1 -V -p 24002 -P 5

* Expected Behavior
I should be seeing results for both sender / receiver.

* Actual Behavior
Am only seeing results for receiver if run in reverse mode or sender if normal.

* Steps to Reproduce
Install iPerf, and run a standard iPerf test between the two.