Build failed in MCreator 2023.3

I get something like this in the console:

FAILURE: Build failed with an exception.
* What went wrong:
Execution failed for task ':processResources'.
> Unable to delete directory 'C:\Users\jroza\MCreatorWorkspaces\lots_of_chiseled_blocks\build\resources\main'
Failed to delete some children. This might happen because a process has files open or has its working directory set in the target directory.
- C:\Users\jroza\MCreatorWorkspaces\lots_of_chiseled_blocks\build\resources\main\assets\lots_of_chiseled_blocks\textures\block\acacia_planks1.png
- C:\Users\jroza\MCreatorWorkspaces\lots_of_chiseled_blocks\build\resources\main\assets\lots_of_chiseled_blocks\textures\block\acacia_planks10.png
- C:\Users\jroza\MCreatorWorkspaces\lots_of_chiseled_blocks\build\resources\main\assets\lots_of_chiseled_blocks\textures\block\acacia_planks11.png
- C:\Users\jroza\MCreatorWorkspaces\lots_of_chiseled_blocks\build\resources\main\assets\lots_of_chiseled_blocks\textures\block\acacia_planks12.png
- C:\Users\jroza\MCreatorWorkspaces\lots_of_chiseled_blocks\build\resources\main\assets\lots_of_chiseled_blocks\textures\block\acacia_planks13.png
- C:\Users\jroza\MCreatorWorkspaces\lots_of_chiseled_blocks\build\resources\main\assets\lots_of_chiseled_blocks\textures\block\acacia_planks14.png
- C:\Users\jroza\MCreatorWorkspaces\lots_of_chiseled_blocks\build\resources\main\assets\lots_of_chiseled_blocks\textures\block\acacia_planks15.png
- C:\Users\jroza\MCreatorWorkspaces\lots_of_chiseled_blocks\build\resources\main\assets\lots_of_chiseled_blocks\textures\block\acacia_planks16.png
- C:\Users\jroza\MCreatorWorkspaces\lots_of_chiseled_blocks\build\resources\main\assets\lots_of_chiseled_blocks\textures\block\acacia_planks17.png
- C:\Users\jroza\MCreatorWorkspaces\lots_of_chiseled_blocks\build\resources\main\assets\lots_of_chiseled_blocks\textures\block\acacia_planks18.png
- C:\Users\jroza\MCreatorWorkspaces\lots_of_chiseled_blocks\build\resources\main\assets\lots_of_chiseled_blocks\textures\block\acacia_planks19.png
- C:\Users\jroza\MCreatorWorkspaces\lots_of_chiseled_blocks\build\resources\main\assets\lots_of_chiseled_blocks\textures\block\acacia_planks2.png
- C:\Users\jroza\MCreatorWorkspaces\lots_of_chiseled_blocks\build\resources\main\assets\lots_of_chiseled_blocks\textures\block\acacia_planks20.png
- C:\Users\jroza\MCreatorWorkspaces\lots_of_chiseled_blocks\build\resources\main\assets\lots_of_chiseled_blocks\textures\block\acacia_planks21.png
- C:\Users\jroza\MCreatorWorkspaces\lots_of_chiseled_blocks\build\resources\main\assets\lots_of_chiseled_blocks\textures\block\acacia_planks22.png
- C:\Users\jroza\MCreatorWorkspaces\lots_of_chiseled_blocks\build\resources\main\assets\lots_of_chiseled_blocks\textures\block\acacia_planks23.png
- and more ...
* Try:
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* Get more help at https://help.gradle.org
BUILD FAILED in 2s

How to fix it?