Kanye West was hospitalized and the remaining 21 dates on his current Saint Pablo tour were canceled amid reports the 39-year-old rapper and entrepreneur is suffering from exhaustion and a variety of possible psychological issues.

People magazine reports that West, who is married to Kim Kardashian, admitted himself to the hospital on the advice of his doctor.

The report quotes a source saying: “He feels like he’s under spiritual attack, and has been for a while. It’s not just the big things; it’s smaller, quieter things, internal things. You might think that it’s about Kim’s robbery, and while that didn’t help, that’s not what’s going on here. He’s dealing with a lot more subtle issues.”

The source added: “Sometimes, darkness creeps in, and Kanye wrestles against it. He talks about that a lot. It’s exhausting, and it takes everything he’s got. He’s just so tired now; he’s very low energy and feels like there’s a grieving in his spirit. It’s very hard to explain, but something has happened recently, where he’s not the ‘Ye that everyone knows.”