Neuer gives the opponent the fastest goal in the German League.. What mistake did he commit?

Goalkeeper Manuel Neuer committed a fatal mistake during a match between his club, Bayern Munich, and FC Augsburg, at the latter’s stadium, on Saturday, within the matches of the fifth week of the German League (Bundesliga). At the kick-off, the Bavarian players passed the ball from the midfield circle, and Luis Diaz returned it back to his teammate Neuer.

Then, Manuel Neuer received the ball but held it for a short period before the opponent's player, Robin Wielhauer, intervened and put pressure on him. At that time, Neuer tried to send a falling ball over the opponent's player to pass it forward, but it hit Robin Wielhauer and he found himself in front of an empty Bayern Munich net, and put the ball into the goal.

The goal came after only 8 seconds, which is the fastest goal in the history of the “Bundesliga” tournament, matching the previous record recorded by the duo Kevin Volland and Karim Bellarabi (after 9 seconds).