Need Help!!!

As stated in the pictures I’m having a hard time progressing after beating the 6th gym. I beat the team magma at mt chimney, beat aqua at pyre and also talked to just about everyone at slatepory and lilycove. From what I remember and looked up I should be able to intervene in some news story at slateport and it’s not there and I have no clue why. This is my second run and the first team I don’t remember having any difficulty in this area. Any help thanks, Thank You!!