“The Cosby Show” alum Keshia Knight Pulliam paid tribute to her former co-star Malcolm-Jamal Warner after his death at age 54 with a touching social media post on Sunday. Knight Pulliam, 46, shared an Instagram video of Warner playing bass guitar onstage for a live audience at City Winery in Atlanta.

The actor made famous by playing Theo Huxtable in "The Cosby Show" died this weekend in an accident in Costa Rica.

Journalist and professor Candace Kelley, who hosted the Not All Hood (NAH) podcast with the late 'Cosby Show' actor, opens up to PEOPLE about her memories of Malcolm-Jamal Warner, calling him a man who was hilarious,