Widget errors and can't edit the home page

I am unable to update the home page due to some widget errors.
“The “shapely_home_parallax” block was affected by errors and may not function properly. Check the developer tools for more details.”

I see that some other users are complaining about this issue but still isn’t fixed.

Hey there

Ensure that you are fully up to date. WordPress, Theme, and Cornerstone (Version Compatibility)

Test for a plugin conflict. You can do this by deactivating all third party plugins, and seeing if the problem remains. If it’s fixed, you’ll know a plugin caused the problem, and you can narrow down which one by reactivating them one at a time.

Remove custom Javascript and custom templates (if any).

Let us know how it goes,