Barcelona recovered from an early setback to secure a 3-1 victory over Deportivo Alaves in LaLiga on Saturday, with first-half goals from Lamine Yamal and Dani Olmo and a late second for the latter sealing the win at the Camp Nou. The triumph lifts last year’s champions to the top of the standings on 34 points, two ahead of second-placed Real Madrid, who have a game in hand at Girona on Sunday. In their second match back at the partially renovated Camp Nou after two-and-a-half years of redevelopment, Barcelona overcame a shaky start amid uncharacteristic scenes of long pre-match ticketing delays that left the stadium half-empty at kickoff. According to the club, the problems were caused by technical difficulties that left thousands of fans unable to access their tickets through the club’s mobile app, creating long lines at the fan support office and forcing the match to begin with swathes of empty seats. Alaves stunned the hosts in the first minute when Pablo Ibanez struck from close range. Barcelona defender Marc Bernal misjudged a corner, …