Unexpected Error

Hi, I keep getting this error, since the upgrade to Wordpress 5.5. Has anyone else had any problems recently:

Unexpected Error
Sorry there was an unexpected error from API call:
SyntaxError: Unexpected end of JSON input.

The error happens at the end of the “Import Template” action.

I have a clean reinstall of wordpress with the following plugins that I’m using:
Wordpress latest version 5.5.
Elementor latest version 3.0.3
Elementor Pro latest version 2.10.3
Envato Elements latest version 2.0.6, premium account

I’ve cleared the browser cache and tried different browser , Chrome, Firefox and IE.
I’ve Envato premium account, and the account is connected and active.

Help, please.