# Could you please help with java.lang.NullPointerException

**URL:** https://discourse.processing.org/t/could-you-please-help-with-java-lang-nullpointerexception/26666
**Category:** Processing
**Created:** [January 1, 2021, 11:55am UTC](https://discourse.processing.org/t/could-you-please-help-with-java-lang-nullpointerexception/26666 "2021-01-01T11:55:37Z")
**Posts on this page:** 1
**Showing post:** 4

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### Author: ![jay\_m](https://yyz2.discourse-cdn.com/flex036/user_avatar/discourse.processing.org/jay_m/32/11020_2.png) [@jay\_m](https://discourse.processing.org/u/jay_m)
#### Post date: [January 3, 2021, 4:23am UTC](https://discourse.processing.org/t/could-you-please-help-with-java-lang-nullpointerexception/26666/4 "2021-01-03T04:23:12Z")

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Do you have two screens on your Mac?

See [this open issue](https://github.com/processing/processing/issues/6121) and [this discussion](https://discourse.processing.org/t/big-sur-and-new-macs/25374/4)

I did not update my Mac yet because things seem shaky (probably due to OpenGL changes)

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