Revisions aren't being displayed

I was able to find a workaround adding the following to my wp-config.php file:
define( 'WP_POST_REVISIONS', 3 );
The sideaffect of this is on the editor widget it has an error:
Error: WP_POST_REVISIONS is defined in your wp-config.php. Revision Control cannot operate.
*But at least now my revisions are displayed and I can compare and revert.

If anyone has a proper fix would be awesome.

You should use that line in your wp-config.php file OR use the plugin. Not both.

Thanks esmi,
I realize this but sadly the only way I can currently get revisions to work is with the combination.
If I just have the line in wp-config.php then the Revisions Editor Widget doesn’t exist.
If I just have Revision Control enabled then no revisions are stored.
If I enable both then I get the Revision History functioning as expected although with that error:
Error: WP_POST_REVISIONS is defined in your wp-config.php. Revision Control cannot operate.

So if anyone knows how to fix Revision Control to display all revisions without enabling the line in wp-config.php then I’m all ears.
In the meantime will stick with my workaround as it’s ‘functioning’

Appreciate the feedback,
Thanks