Java Virtual Machine Launcher
A Java Exception has occurred.
Building workspace, Ant build
[eclipse-workspaces]\eclipse-jee-photon-R-win32-x86_64\.metadata\.log
!ENTRY org.eclipse.ant.launching 4 120 2018-12-11 14:46:39.726
!MESSAGE Error logged from Ant UI:
!STACK 0
java.net.SocketTimeoutException: Accept timed out
at java.net.DualStackPlainSocketImpl.waitForNewConnection(Native Method)
at java.net.DualStackPlainSocketImpl.socketAccept(Unknown Source)
at java.net.AbstractPlainSocketImpl.accept(Unknown Source)
at java.net.PlainSocketImpl.accept(Unknown Source)
at java.net.ServerSocket.implAccept(Unknown Source)
at java.net.ServerSocket.accept(Unknown Source)
at org.eclipse.ant.internal.launching.launchConfigurations.RemoteAntBuildListener$ServerConnection.run(RemoteAntBuildListener.java:89)
[Project Properties](Alt + Enter) > Builder
Select Ant Builder from the listing.
Edit
JRE
Separate JRE: Select JDK 1.8