Houston (AFP) – The police chief in charge of operations at the Texas elementary school where a gunman murdered 21 people was not informed of desperate calls made by children trapped inside, a state senator said Thursday. The 911 calls “were not being communicated to the so-called incident commander,” Senator Roland Gutierrez told a news conference, referring to the school district’s police chief, Pete Arredondo. “There is human error, there is system error,” Gutierrez said, adding it was unclear exactly who all was receiving the calls, but that he had been told it was only the Uvalde city pol…