Class "FlexicontentHelperRoute" not found

I'm using Convert Forms on a site where I'm also using Flexi. I created a menu item of type Convert Forms and I'm getting the following error: Class "FlexicontentHelperRoute" not found on a white page.

I've used CF on Flexi sites before without ny issues. Any idea why this is happening?

Thanks again!  

Flexi - Sept 20 Gitbhub
Joomla - 5.1.4

Hello actived error reporting in ordzr to print full error
And post here

strange you display a convert form only or its a flexicontent view ?

The menu item type is Convert Form, so it isn't a Flexi view. There should be some Flexi modules displayed on the page, but not within the content of the menu item.

can you send me link and access ?
regards