Bernhard pitted to hand over to Hartley, he was back in the pits on the very next lap and they've been taking it apart for the past half hour. Looks like it could be batteries or electrics, something like that.
The SC came out because the 98 Aston Martin hit the barriers in Porsche Curves, leaving some debris on the circuit, and at the same time Francois Perrodo went off into the gravel at Mulsanne Corner in 83.