//class org.apache.velocity.script.VelocityScriptEngine
final ScriptEngine engine = engineFactory.getScriptEngine();
        if (engine instanceof Compilable) {
            try {
                ((Compilable) engine).compile("");
 ...

javax.script.ScriptException: org.apache.velocity.exception.ResourceNotFoundException: No template name provided
    at org.apache.velocity.script.VelocityScriptEngine.compile(VelocityScriptEngine.java:311)
    at org.apache.velocity.script.VelocityScriptEngine.compile(VelocityScriptEngine.java:288)
    at com.Workers.LevelCheck.main(LevelCheck.java:69)
Caused by: org.apache.velocity.exception.ResourceNotFoundException: No template name provided
    at org.apache.velocity.runtime.resource.loader.StringResourceLoader.getResourceStream(StringResourceLoader.java:353)
    at org.apache.velocity.Template.process(Template.java:108)
    at org.apache.velocity.script.VelocityScriptEngine.compile(VelocityScriptEngine.java:306)
    ... 2 more