Python mode doesn't work.

[saltwater2015]

Win 11 home. Processing 4.3.

I just tried a very simple code:

def setup():
    size(640, 360, P3D)
    fill(204)


def draw():
    lights()
    background(0)

But I got the following output: java.lang.NullPointerException at jycessing.Runner.runSketchBlocking(Unknown Source) at jycessing.mode.run.SketchRunner.lambda$startSketch$3(Unknown Source) at java.base/java.lang.Thread.run(Thread.java:833) But I am in the java mode. All things goes all right. I cant run all types of Examples in the python mode. I got the same output as the above.