I love this tune! The Real Book has the third chord as an Ab7, though the majority of recordings I’ve found seem to prefer a D-7. I wouldn’t say the Ab7 is necessarily “wrong” though, as several some recordings use the Ab7. Learn to navigate both, and use your ears at jam sessions!
Videos to learn the melody/changes
Sonny Stitt Quartet - There Is No Greater Love
There Is No Greater Love/The One Before This - Ammons and Stitt
Oscar Peterson with Ray Brown and Niels-Henning Ørsted Pedersen - There Is No Greater Love
John Scofield There Is No Greater Love
Billie Holiday - There Is No Greater Love (Decca Records 1947)