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Houston’s police chief said Monday that he expressed concerns about safety to Travis Scott before the rapper performed at a sold-out music festival where eight people died and hundreds more were injured in a crush of fans as Scott took to the stage, the Associated Press reports. Houston Police Chief Troy Finner did not elaborate on his specific safety concerns voiced Friday at the Astroworld festival, an event founded by Scott that was attended by some 50,000 people. His department has launched a criminal investigation into what went wrong. Houston police and fire department investigators have said they would review…