postgis query for raster values within GeoJSON mask

# second problem
select row_to_json(t) from (SELECT rid, pvc FROM file_pszjkuicfjvxvizbygbq, ST_ValueCount(rast,1) AS pvc WHERE st_intersects(st_transform(st_setsrid(ST_geomfromgeojson('{"geometry":{"type":"Polygon","coordinates":[[[9.31640625,60.88770004207789],[9.31640625,61.48075950007598],[10.8984375,61.48075950007598],[10.8984375,60.88770004207789],[9.31640625,60.88770004207789]]]}}'), 4326), 3857), rast) as t;

error running query { [Error: ERROR:  unknown GeoJSON type




# first problem, solved!
select row_to_json(t) from (
  SELECT rid, pvc FROM file_pszjkuicfjvxvizbygbq, ST_ValueCount(rast,1) 
  WHERE st_intersects(
    st_transform(
      st_setsrid(
        ST_geomfromgeojson(
          '{"geometry":{"type":"Polygon","coordinates":[[[9.31640625,60.88770004207789],[9.31640625,61.48075950007598],[10.8984375,61.48075950007598],[10.8984375,60.88770004207789],[9.31640625,60.88770004207789]]]}}'
        ), 4326
      ), 3857
    ), rast
  ) AS pvc
) as t;

error running query { [Error: ERROR:  syntax error at or near "AS"
LINE 1: ...625,60.88770004207789]]]}}'), 4326), 3857), rast) AS pvc) as...