Causes Wordpress 5.0 Gutenberg Classic and Image Blocks to not work

[mediamacaw]

[Rahe]

Hello,

Thank you for the report.

Can you describe and copy/paste the PHP/JS errors ?

[mediamacaw]

When I turn on simple image sizes and try to add an image block I get this.

This block has encountered an error and cannot be previewed.

Also, if I go to edit a post that was made in classic editor it does not show any content.

If I turn simple image sizes off everything works.