The animated series cancel the Clone Wars animated series. Although the House of Mouse didn't give much of a reason, it's reasonable to assume the company wanted an immediate return on the investment — and because the show aired on a competitor network.
The story of Star Wars: The Clone Wars was ultimately completed on Disney+, but the seventh and final season was abbreviated, with several plots dropped completely. But Lucasfilm rarely lets anything go to waste, and it's possible the cut storylines could still be picked up in a spinoff series in the works, Star Wars: The Bad Batch. Set after the end of Star Wars: Episode III - Revenge of the Sith, it stars a group of Clone Troopers whose mutations and genetic imperfections were considered desirable by the Grand Army of the Republic. With the Clone Army disbanded, they'll be cut loose from the Empire and forced to make their own way as a band of mercenaries.
This could provide the perfect opportunity to pick up a plot George Lucas had planned for Star Wars: The Clone Wars, that never made its way on to the small screen. Lucas had intended to produce a four-episode plot set on the Wookiee homeworld of Kashyyyk, and it was intended to explain Yoda's comment that he had "good relations with the Wookiees" in Revenge of the Sith. It seems to have involved something of a three-way battle between Old Republic forces, the Separatists, and a group of Trandoshans who had come to Kashyyyk to hunt Wookiees. Part of the plot would have tackled the Wookiees' religious sensibilities, as they would have objected to damage to the Great Forest.
Naturally, this plot would need to be heavily adapted for the Dark Times, but there's no reason Lucasfilm couldn't head back to Kashyyyk. The heavily forested world has appeared prominently in other tie-in material, including the Kashyyyk, perhaps hired to protect the Wookiees from Trandoshan hunters, given the Empire certainly wouldn't be interested in defending them.
Nothing is ever gone for good in Star Wars; it's just set aside for a time. It would be great to see Star Wars: The Bad Batch pay homage to an idea developed by George Lucas himself, allowing viewers to get a sense of how Lucas himself envisioned the Wookiee homeworld.