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# Axis length cannot be less than zero

## Issue:

I'm trying to build a Plane, but I get the error: "Axis length can't be less than zero".

## Applies to:

* Axis Error

## Cause:

This is happening because there is a vector that is created which is \[0,0,0] that is causing the error. An example of how this can occur is shown below:

![When the cross product results in a vector of all zeros, the axis has no length.](https://files.learn.ntop.com/help-articles/user-interface/4406126857747.png)

## Solution:

Remove the vector which results in the \[0,0,0] cross product.

## Keywords:

*length issue axis 0*