Wordpress classic text editor not displaying post content and toolbar is missing

[admin]

I am using wordpress 5 along with Classic Editor plugin. But I am not able to edit posts using it. The post edit area is completely blank and the toolbar above it also not showing

<a href="

https://imgur.com/DUbOz

" rel="nofollow noreferrer"><img src="

https://imgur.com/DUbOz

" alt="it"></a>.