Error: At function: AssumeColumnOrder, At function: Take, At function: Sort, At function: PgReplaceUnknown, At function: OrderedMap, At function: AsStruct

[SloNN]

I'm making a query

SELECT DATE_TRUNC('year', dt_tm) AS __timestamp,
       athlete AS athlete,
       count(DISTINCT athlete) AS "COUNT_DISTINCT(athlete)"
FROM
  (select edition,
          edition_id,
          country_noc,
          sport,
          event,
          result_id,
          athlete,
          athlete_id,
          pos,
          medal,
          isTeamSport,
          year,
          CASE
              WHEN MOD(year, 4) = 0 THEN False
              ELSE True
          END AS isWinter,
          TO_DATE(year::text || '-01-01', 'YYYY-MM-DD') AS dt,
          TO_TIMESTAMP(year::text || '-01-01 00:00:00', 'YYYY-MM-DD HH24:MI:SS') AS dt_tm
   from
     (select edition,
             edition_id,
             country_noc,
             sport,
             event,
             result_id,
             athlete,
             athlete_id,
             pos,
             medal,
             isTeamSport,
             cast(LEFT(edition, 4) as int) as year
      from Olimpic) as Olimpic) AS virtual_table
GROUP BY athlete,
         DATE_TRUNC('year', dt_tm)
ORDER BY "COUNT_DISTINCT(athlete)" DESC
LIMIT 10000;

But receives the error

Status: GENERIC_ERROR
Issues: 
<main>: Error: Type annotation, code: 1030
    <main>:1:1: Error: At function: AssumeColumnOrder, At function: Take, At function: Sort, At function: PgReplaceUnknown, At function: OrderedMap, At function: AsStruct
        <main>:1:8: Error: At function: PgResolvedCall
            <main>:1:27: Error: At function: Member
                <main>:1:27: Error: Member not found: _alias_virtual_table.dt_tm