Question Having trouble launching my bot in Spectre

EDIT: I simply tried configuring it with an earlier version of the Java JRE (1.8.0_181 instead of 10.0.2) and it completely solved the problem, no errors anymore.

I was following the Coding Chronicles guide from this forum and got to the end of Part 2 where you launch Spectre in IntelliJ but I can't get it to work because when I do that it gives these errors:

java.lang.reflect.InvocationTargetException
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:564)
at javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplicationWithArgs(LauncherImpl.java:473)
at javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplication(LauncherImpl.java:372)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:564)
at java.base/sun.launcher.LauncherHelper$FXHelper.main(LauncherHelper.java:941)
Caused by: java.lang.ArrayIndexOutOfBoundsException: 1
at nul.iiiIIIiiIiiii.true(scc:222)
at com.runemate.boot.Boot.const(bvc:28)
at com.runemate.boot.Boot.main(bvc:39)
... 11 more
Exception running application com.runemate.boot.Boot
Process finished with exit code 1

What to do? Is his guide outdated or something and something needs to be done differently now?