Py4JError: An error occurred while calling o511.array. Trace: py4j.Py4JException: Method array([]) does not exist at py4j.reflection.ReflectionEngine.getMethod(ReflectionEngine.java:344) at py4j.reflection.ReflectionEngine.getMethod(ReflectionEngine.java:352) at py4j.Gateway.invoke(Gateway.java:297) at py4j.commands.AbstractCommand.invokeMethod(AbstractCommand.java:132) at py4j.commands.CallCommand.execute(CallCommand.java:79) at py4j.ClientServerConnection.waitForCommands(ClientServerConnection.java:197) at py4j.ClientServerConnection.run(ClientServerConnection.java:117) at java.base/java.lang.Thread.run(Thread.java:840) https://drive.google.com/file/d/1ypiFK2gKac-cZ1Cd-2mMffuKBMIDMEAf/view?usp=drive_link https://wiki.david888.com/share/z5h5nk