Install Wildfly and when trying to start wildfly server, we get the following errors:

We have installed the proper JDK version as suggested by ElegantJ BI support team

Issue : Deployment Fail   
Error : Http Listener - Wildfly Error   
Root Cause : Port conflict

The Wildfly configured to use the default port 8080. Most likely, you have another process or service running which is already using port 8080. Try to find out what process it is and stop it, or try configuring Wildfly to use a different port.

Changing port in standalone.xml
One can change the port from standalone.xml file. In <socket-binding-group> tag you will find http related line. From there just change to other port for e.g 8090. Now you will not find that error in your console.

Note: This article is based on ElegantJ BI Version 4.1. This may or may not be relevant to the ElegantJ BI version you may be using.