The Ijmaa of the Sahabasaaa

Can there be an Ijmaa that forms after an initial Khilaf, especially if that Khilaf took place at the time of the setup? Scholars have actually mentioned and. stated, I have a hum Allah, an IJmaa for the issue of Khuruj,. The Dun Khurud upon the oppressing Muslim leader is not allowed. So this view of being attributed to Ahmad, it doesn't exist. And even if we do, we will say that this sura'i doesn't fall under it because this type is the Ijimah from two perspectives.