Gladys Knight has caught the bug and was forced to cancel her show in Florida over the weekend.

Florida Theatre President Numa Saisselin delivered the bad news at the last minute ahead of GK’s Saturday night show in Jacksonville. He says Gladys and one of her staff members became sick backstage at the venue and had to be attended to by Jacksonville Fire and Rescue. He says Knight “was smiling and in good spirts when she left the building.”

Theatre officials have not yet determined if the show will be rescheduled or not but said they should know by early next week. “If you are unable to attend a new date, as long as you purchased your tickets from the Florida Theatre or FloridaTheatre.com, we would refund your purchase,” they said.

We’ve reached out to GK’s reps to get an update on how she’s doing … so far, no word back.

Travis Kelce‘s playing days may be coming to an end soon, but Henry Winkler is making it clear he thinks the NFL star’s acting career is just getting started … telling TMZ Sports he loved the dude in “Grotesquerie.”

We caught up with Henry out in Los Angeles this week … and he had nothing but praise for the way Kelce played a flirty ex-stripper in his son Max Winkler‘s new horror drama series.

The Fonz said Kelce gave off a “warm and professional” vibe during the show, while calling the footballer’s portrayal of Ed Lachlan “great.”

The “Happy Days” star, though, was not as complimentary of Kelce’s teammate, Patrick Mahomes … as he said the quarterback is still ducking his chicken dinner invitation.

Tupac Shakur‘s expansive posthumous catalog could grow even bigger … if any hardcore collectors have the cash to unearth some of his pre-Death Row Records tracks!!!

Momentsintime.com is selling the lyrics and audio capsule of unreleased Tupac music stemming from late 1990 to early 1991, when the late rap martyr was recruited for his budding talent.

Tupac composed and recorded an unreleased album for a group called Jesse and the Kidz … which never dropped due to the unspecified death of one of the band members.