A calamitous defence error from the goalkeeper Christiane Endler helped defending champions Arsenal to come from behind against OL Lyonnes and ensure they take a narrow lead into next week’s Champions League semi-final second leg in France. Jule Brand had giving the visiting team, the record eight-time winners of this competition, a first-half lead in front of 26,758 fans at the Emirates Stadium. However, first Endler fumbled the ball into her own net via a deflection off Ingrid Engen as the Gunners upped the pressure in the second half before Olivia Smith gave them the lead late after another defensive mistake. Renée Slegers may have insisted that “last year was last year, this year is this year” as Arsenal prepared to play Lyonnes at the semi-final stage for a second successive season, but the first half of this encounter felt decidedly familiar.…