Does anyone have an idea why this happens: ```java...

# datascience

[corneil]

Does anyone have an idea why this happens:

java.lang.NullPointerException: null
	at org.jetbrains.letsPlot.core.plot.base.aes.AesScaling.strokeWidth(AesScaling.kt:18)
	at org.jetbrains.letsPlot.core.plot.base.geom.util.LinesHelper$decorate$1.invoke(LinesHelper.kt:228)
	at org.jetbrains.letsPlot.core.plot.base.geom.util.LinesHelper$decorate$1.invoke(LinesHelper.kt:228)
	at org.jetbrains.letsPlot.core.plot.base.geom.util.LinesHelper.decorate(LinesHelper.kt:241)
	at org.jetbrains.letsPlot.core.plot.base.geom.util.LinesHelper.decorate$default(LinesHelper.kt:224)
	at org.jetbrains.letsPlot.core.plot.base.geom.util.LinesHelper.createPolygon(LinesHelper.kt:112)
	at org.jetbrains.letsPlot.core.plot.base.geom.PolygonGeom.buildIntern(PolygonGeom.kt:33)
	at org.jetbrains.letsPlot.core.plot.base.geom.GeomBase.build(GeomBase.kt:33)

[Andrei Kislitsyn]

Hi! Please share your code.

[corneil]

I have actually found the cause and created an issue https://github.com/Kotlin/kandy/issues/497