We've spoken with festival honchos who tell us there's not currently another artist locked in to take Ye's Sunday spot. However, our sources say there's no animosity toward Kanye ... Coachella organizers understand he's been through a lot lately, and want him to take the time to work on himself. We're told if that means having to miss the gig, so be it.

It's interesting ... Coachella producers were blindsided by Ye's withdrawal. In fact, they learned about it from us. Nevertheless, no hard feelings.

The month of March saw Kanye on a social media tear, going after Kim Kardashian, Pete Davidson and others -- eventually resulting in a suspension from Instagram for the racist attack against Trevor Noah.

In fact, just before the suspension, he teased the Coachella performance with a still image of Pete Davidson's head in the "Eazy" music video and caption, "Y'all ready for Coachella?"

Our sources say Kanye's team didn't provide a specific reason as to why he was no longer going to be headlining -- but he's obviously been suffering through personal issues.

TMZ broke the story ... Kanye backed out of Coachella, and in doing so fans will no longer see Travis Scott who was supposed to hit the stage with Kanye during his show.

While he's out of the show, Kanye hasn't gone into hiding ... he was spotted in Beverly Hills Monday glued to his phone.