Question SyntaxError: Unexpected token < in JSON at position 0

[bowis]

Whenever I want to edit my homepage built by Elementor the screen keeps on loading (see image) & I'm presented with the following error:
post.php?post=174&action=elementor&elementor-mode=safe:1 Uncaught (in promise) SyntaxError: Unexpected token < in JSON at position 0
I have tried to disable all plugins except elementor, but the error is still present, any ideas?

 

[wmolinag]

I had the exact same issue. The solution was to roll back to an older version... Since I wasn't sure when this issue was introduced I rolled back to 2.9.9. and managed to make it work again. Hope it helps!