A new Star Wars story is confirming that – between the events of The Empire Strikes Back and Return of the Jedi, the Force itself changed, all thanks to a daring attack on the Sith. Qi’ra, a major character from Solo: A Star Wars Story, has become a major threat to the Galactic Empire and the Sith Order in recent canon-continuity Star Wars comics. Everyone from Emperor Palpatine to Luke Skywalker has been feeling the effects of her anti-Sith superweapon, which appear to be altering the Force itself, necessitating drastic action from Luke.
https://screenrant.com/star-wars-force-changed-by-luke-new-kyber/