Arsenal suffered an embarrassing 2-1 loss at home to minnows Ostersunds FK, but will progress to the last 16 of the Europa League after winning 4-2 on aggregate.
The Gunners were lacklustre throughout they seemed more focused on their League Cup final clash against Manchester City on Sunday rather than their Swedish opponents.
Despite carrying a 3-0 lead pre-match, it looked as though the game could go into extra-time when Ostersunds raced into a shock 2-0 lead after 23 minutes.
Calum Chambers diverted Hosam Aiesh's shot into his own net before Ken Sema's powerful finish left the home crowd shocked.