I try to open one java software, but its not open. Please, what I make wrong. Have:
java -version
openjdk version "15.0.2" 2021-01-19
OpenJDK Runtime Environment (build 15.0.2+7)
OpenJDK 64-Bit Server VM (build 15.0.2+7, mixed mode)
java -jar zeon.jar
Error: Could not find or load main class com.darkmental.zeondownloader.App
Caused by: java.lang.NoClassDefFoundError: javafx/application/Application