ya, it happen to me too, gen try it again and again till it is rooted, I think it is Normal gen if u r using data try to get WIFI access

Try methods other than king root , like flashing magisk

Bro android 6 ena keza belay kehone...be computer twrp recovery flash argeh be (super su)weym be (magisk)root argew...kalgebah how to root with super su bleh google argew yimetalhal😅

Kingo root tetekem Mirt new embi kale gin beka silkik high copy new malet new

If It is above android 6 it is more likely impossible to root it