This url is no longer valid:

https://access.redhat.com/documentation/en-us/openjdk/8/html/openjdk_8_for_windows_getting_started_guide/webstart

It appears at the beginning of the logging:

Starting Netx, command: ["C:/Program Files/RedHat/java-1.8.0-openjdk-1.8.0.422-1/webstart/../jre/bin/java.exe" -XX:+TieredCompilation -XX:TieredStopAtLevel=1 -XX:+UseSerialGC -XX:MinHeapFreeRatio=20 -XX:MaxHeapFreeRatio=40 -splash:"C:/Program Files/RedHat/java-1.8.0-openjdk-1.8.0.422-1/webstart/javaws_splash.png" -Xbootclasspath/a:"C:/Program Files/RedHat/java-1.8.0-openjdk-1.8.0.422-1/webstart/javaws.jar" -classpath "C:/Program Files/RedHat/java-1.8.0-openjdk-1.8.0.422-1/webstart/../jre/lib/rt.jar" -Ditw.userdata="C:/Users/Tyler.O'Brien/AppData/Local/RedHat/java-1.8.0-openjdk-1.8.0.422-1.b05.redhat.windows.x86_64/webstart/" -Dicedtea-web.bin.name=javaws.exe -Dicedtea-web.bin.location="C:/Program Files/RedHat/java-1.8.0-openjdk-1.8.0.422-1/webstart/javaws.exe" net.sourceforge.jnlp.runtime.Boot -Xnofork -helpurl="https://access.redhat.com/documentation/en-us/openjdk/8/html/openjdk_8_for_windows_getting_started_guide/webstart" 

It also appears in popup windows, like this one:

~~~
Fatal: Initalization Error: Could not initialize application. The application has not been initialized, for more information execute
Netx directy from the command line.

Help:  https://access.redhat.com/documentation/en-us/openjdk/8/html/openjdk_8_for_windows_getting_started_guide/webstart

~~~