Breaks Block Editor

I know this plugin hasn’t been updated in two years, but I have continued to find it useful, and it didn’t have any obvious security flaws to make me stop. However, when I upgraded today to 5.0, I discovered this plugin and Gutenberg do not play nice. Unless I deactivate Post Thumbnail Editor, I get a blank screen when I try to edit a post or page using the block editor (aka only way to edit if not using Classic Editor plugin).

Would love to see an update for this plugin!