There we have the culprit:
java.runtime.version=10.0.1+10TripleA needs Java 8, as there are compatibility issues with Java 9 and Java 10.
Haven’t you installed Java 8 Update 171?
Now you have got options as follows:
You can remove Java 10 and install Java 8 instead.or You can install Java 8 next to Java 10 - in this case you need to install the latest prerelease of TripleA, to be found here:
https://github.com/triplea-game/triplea/releases
This prerelease should automatically choose Java 8.
Please report back. :-)