Platinum-selling rock/pop star John Mayer was rushed to a hospital early December 5.
Mayer, who is now touring with The Dead and Company, was forced to cancel his show in New Orleans today.
The band announced the news to their fans over Twitter, mentioning that the lead singer and guitarists health will likely result in some scheduling changes.
Apparently, all of the purchased tickets will still be honored at the postponed date that is yet to be announced.
Bob Weir tweeted a photo with his bandmate, captioning it, "Wishing a speedy recovery for John".
The group is in the second leg of its 2018 tour, and has shows slated for Thursday and Friday in Florida, as well as a string of dates in Mexico in February.
According a brief story on the TMZ website, the 40-year-old has been hospitalized in New Orleans.
Get well soon, John!