WordPress Woo Commerce - Unable to edit product description
I need help on WordPress Woo Commerce. I can't edit product description, I tried disabling all the plugins and enabling them one by one, but no success. I switched to the default theme, still the same. I can't edit product short description and posts content as well. In the Console I see an error: "Uncaught SyntaxError: Unexpected end of input". The error seems to originate in the wp-includes/js/tinymce/themes/modern/theme.min.js file.
I am using WordPress 5.0.2 and Phlox Theme 2.3.2 and Woo Commerce 3.5.3.
Can anyone give me an idea how to solve this issue?