Informe del grupo de exploradores de datos - error de parámetro

Error
4 
--[params]
-- string :username
-- int :min_days = 10

WITH consecutive_visits AS (
  SELECT user_id,
       visited_at,
       -- El valor de s será el mismo para cada grupo de días consecutivos
       visited_at - (DENSE_RANK() OVER (PARTITION BY user_id ORDER BY visited_at))::int s
    FROM user_visits
    WHERE user_id = (SELECT id FROM users WHERE username = :username)
)

SELECT
MIN(visited_at) period_start,
COUNT(*) AS consecutive_days,
MAX(visited_at) period_end
FROM consecutive_visits
GROUP BY user_id, s
HAVING COUNT(*) >= :min_days
ORDER BY period_start DESC

Lo intenté con el modo seguro activado (solo plugins oficiales) y tengo el mismo problema.

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