Exception in thread "main" java.lang.NoClassDefFoundError: RecommendationRunner at Main.main(Main.java:94) Caused by: java.lang.ClassNotFoundException: RecommendationRunner at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:641) at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:188) at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:525) ... 1 more