# I'm not able to run any code on Processing Python mode
**URL:** https://discourse.processing.org/t/im-not-able-to-run-any-code-on-processing-python-mode/34730
**Category:** Processing.py
**Created:** [January 19, 2022, 2:03pm UTC](https://discourse.processing.org/t/im-not-able-to-run-any-code-on-processing-python-mode/34730 "2022-01-19T14:03:51Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@noL](https://discourse.processing.org/u/noL)
#### Post date: [January 19, 2022, 2:03pm UTC](https://discourse.processing.org/t/im-not-able-to-run-any-code-on-processing-python-mode/34730/1 "2022-01-19T14:03:51Z")
I just installed processing and I can’t run any code. Not even print(‘hello, world!’).
This error keeps popping up in the console panel. I couldn’t find anybody else who had this issue, can someone please help?
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)
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### Author:  [@JSGauthier](https://discourse.processing.org/u/JSGauthier)
#### Post date: [January 19, 2022, 3:57pm UTC](https://discourse.processing.org/t/im-not-able-to-run-any-code-on-processing-python-mode/34730/2 "2022-01-19T15:57:53Z")
Hi there,
Try posting this (and looking for solutions) in the **processing.py** topic forum.
You may find help there.
> **[Processing.py](https://discourse.processing.org/c/processing-py/9)**
>
> Python language Mode for Processing
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### Author:  [@tabreturn](https://discourse.processing.org/u/tabreturn)
#### Post date: [January 19, 2022, 8:19pm UTC](https://discourse.processing.org/t/im-not-able-to-run-any-code-on-processing-python-mode/34730/3 "2022-01-19T20:19:09Z")
Are you using Processing 4? Right now, there’s no Python Mode support for Processing 4. Use Processing 3.5.4, instead.
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### Author:  [@btbamfan1](https://discourse.processing.org/u/btbamfan1)
#### Post date: [January 21, 2022, 12:12am UTC](https://discourse.processing.org/t/im-not-able-to-run-any-code-on-processing-python-mode/34730/4 "2022-01-21T00:12:53Z")
Yeah im having the same problem, using Processing 4, but just switching to Processing 3.5.4 will work, like the other guy said.
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### Author:  [@tabreturn](https://discourse.processing.org/u/tabreturn)
#### Post date: [January 26, 2022, 8:38pm UTC](https://discourse.processing.org/t/im-not-able-to-run-any-code-on-processing-python-mode/34730/5 "2022-01-26T20:38:56Z")
– UPDATE –
Processing 4.0b4 includes a “Python Mode for Processing 4”. There’ll likely be a few bugs to sort out, so consider this in testing for now.
