Screen is blank after HTML shortcode

Hey guys!

I tried to create a shortcode with HTML content, and now I can’t edit or create any shortcode, the screen is just blank.

I already deleted the shortcode created, but the problem stills.

What I need to do? Is it a bug?

Thanks in advance!

[img]https://image.prntscr.com/image/CwJl-IspTVS5NpdOWjB-QA.png[/img]