35:24
Surely We have sent you with the truth as a bearer of good news and a warner; and there is not a people but a warner has gone among them.

36:6
A revelation of the Mighty, the Merciful. That you may warn a people whose fathers were not warned, so they are heedless.

If the Meccan's forefathers were not warned, this contradicts 35:24 stating that all communities had a warner among them.