St. Johns County, FL — Sam Rivers, the longtime bassist for the chart-topping nu-metal band Limp Bizkit, has died at age 48 after being found unresponsive in his Florida home, authorities confirmed. According to an incident report obtained by TMZ, emergency responders were called to Rivers’ residence earlier this week after a woman identified as Keely discovered him face-down in the bathroom. She immediately called 911 and attempted CPR until first responders arrived. Deputies with the St. Johns County Sheriff’s Office noted that Rivers appeared to have suffered a fall, with a visible cut above his eye and evidence of…