Read the text and answer the following question.

    Indonesia put in an impressive performance in their 2-0 defeat of Singapore, but still failed to qualify for next year’s AFC U-22 soccer championship after finishing a third place at the end of Group E matches in Pekanbaru, Riau on Sunday.

    The two goals for the home side, which welcomed Coach Aji Santoso back the sidelines from a four matches suspension, both came in the second half from Agung Supriyanto.

    He scored his first goal from the penalty box before finding his second several minutes later. He beat a defender with a swift maneuver from the right flank and had the goalkeeper gasping as his thunderous goal blasted into the far post.

    The young Indonesians collected 9 points, or just one point behind runner-up Australia, out of a six strong field of competitors. Japan topped the standing with a perfect collection 20-2 goal margin.

    Singapore came in fourth with 7 points followed by Timor Leste with 3 points and Macau with no points.

    In earlier matches in the day, favorite Japan continued their dominant form with a 5-0 drubbing of another tournament favorite Australia, while Timor Leste chalked up their first victory, a 4-1 over last-placed Macau.

Why did Indonesia fail to qualify for next year’s AAFC U-22?