# RunTimeError\_Multilabel

**URL:** <https://discourse.slicer.org/t/runtimeerror-multilabel/30282>\
**Category:** Support\
**Tags:** segmentation, monailabel\
**Created:** [June 28, 2023, 2:13pm UTC](https://discourse.slicer.org/t/runtimeerror-multilabel/30282 "2023-06-28T14:13:25Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![Spiros\_Karkavitsas](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/spiros_karkavitsas/32/18224_2.png) [@Spiros\_Karkavitsas](https://discourse.slicer.org/u/Spiros_Karkavitsas)\
**Post date:** [June 28, 2023, 2:13pm UTC](https://discourse.slicer.org/t/runtimeerror-multilabel/30282/1 "2023-06-28T14:13:25Z")

</div>

Hello,

When I am trying follow a multilabel approach using MONAI Label, I get this error here when I press the button for training . I use for training 3 labels. When I do the same with two labels I do not have such an error.

 ![RuntimeError](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/8/3/83ca04be8fa53ff646d71669b25818426dd6652d.jpeg)