Not able to add new post

Hi,

I am not able to add any new post. When add new post, this error occurs – “The editor has encountered an unexpected error.”

To solve this –

1. I have cleared all my history and cache of the browser
2. Cleared all the cache of WordPress through WP Rocket.
3. Deactivated all the plugins to check whether any plugin is creating the problem.
4. Created a new user to see if it helps in any way.
5. Tried opening in different browser and in incognito mode too.

But none of the above ways have solved the problem. So if anyone could genuinely help me get through this error! I am in dire need!

Thanks!

The page I need help with: [log in to see the link]