The problem now is that some of Barcelona's important players have been injured during the international break and the most unpleasant is Araujo's injury. De Jong is also reportedly injured which in consequence Barcelona will lose his midfielder in the upcoming match.
I know Mallorca may not be a strong opponent, but I don't want Barcelona to underestimate them. Mallorca are playing at home, so maybe they will be more motivated to play well in front of the crowd. In this match, I hope that Barcelona will have no trouble getting 3 points from Mallorca to maintain their consistency in Laliga.
Barcelona has a big squad, they have enough substitution for the injured players. As far as I know, there are 5 players injured (Araujo, Kounde, Bellerin, Frenkie, and Depay). Only the defense line will miss some players, and it may impact a bit on Barcelona performance. While for other lines, it seems no problem because only misses 1 player. I don't think Xavi will get difficulties handling this injury problem, he has enough options as the substitute player.
By the way, Barcelona shouldn't be worried to play against Mallorca. Mallorca didn't have a good record when they played against big teams. They were defeated by Real Betis and Real Madrid previously, Barcelona should win as well against them. I assume Barcelona will win more than 2 goals in the upcoming match against Mallorca.