Error load from database

[Alexander Rodriguez Torres]

I have these error when I load my map from database. Can you help me???

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msDrawMap(): Image handling error. Failed to draw layer named 'Contornos'. 
prep_DB(): Query error. Error executing POSTGIS DECLARE (the actual query) statement: 'DECLARE mycursor BINARY CURSOR FOR SELECT contornos::text,asbinary(force_collection(force_2d(the_geom)),'NDR'),OID::text from contornos WHERE the_geom && setSRID('BOX3D(9387137.4 791043.7018,10119140.81 1522550.8382)'::BOX3D, find_srid('','contornos','the_geom') )' 

Postgresql reports the error as 'ERROR: cannot cast type contornos to text '
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This is my .map

MAP
  NAME "Mapa de la UCI"
  STATUS ON
  EXTENT 9387137.4 805683.77 10119140.81 1507910.77 
  SIZE 500 500 
  SHAPEPATH "./data"
  SYMBOLSET "./etc/symbols.sym"
  FONTSET "./etc/fonts.txt"
  IMAGETYPE PNG
  IMAGECOLOR 174 183 207
  UNITS METERS
  TEMPLATEPATTERN "UCI"
  WEB
    MINSCALE 259371
    IMAGEPATH "C:/temp/"
    IMAGEURL "/tmp/"
    HEADER "templates/header.html"
    FOOTER "templates/footer.html"
 END
  REFERENCE
    STATUS ON
    IMAGE "images/keymap.png"
    SIZE 88 69 
    EXTENT 9387137.4 805683.77 10119140.81 1507910.77 
    COLOR -1 -1 -1
    OUTLINECOLOR 255 0 0
    MINBOXSIZE 3
    MAXBOXSIZE 0
    MARKER 0
    MARKERSIZE 0
  END
  QUERYMAP
    STATUS OFF
    SIZE -1 -1 
    COLOR 255 0 0
    STYLE HILITE
  END
  #
  # Start of legend object
  #
  LEGEND
    STATUS ON
    IMAGECOLOR 255 255 255
    POSITION LL
    KEYSIZE 18 12 
    KEYSPACING 5 5 
    TEMPLATE "ttt"
    LABEL
      TYPE BITMAP
      SIZE MEDIUM
      OFFSET 0 0 
      BUFFER 0
      MINDISTANCE -1
      MINFEATURESIZE -1
      COLOR 0 0 89
      PARTIALS TRUE
      FORCE FALSE
    END
  END
  #
  # Start of scalebar object
  #
  SCALEBAR
    STATUS ON
    COLOR 255 255 255
    OUTLINECOLOR 0 0 0
    BACKGROUNDCOLOR 0 0 0
    IMAGECOLOR 255 255 255
    UNITS KILOMETERS
    INTERVALS 5
    SIZE 150 5 
    STYLE 0
    POSITION LL
    LABEL
      TYPE BITMAP
      SIZE SMALL
      OFFSET 0 0 
      BUFFER 0
      MINDISTANCE -1
      MINFEATURESIZE -1
      COLOR 0 0 0
      PARTIALS TRUE
      FORCE TRUE
    END
  END
  #
  # Start of OutputFormat object
  #
  OUTPUTFORMAT
    NAME "png"
    MIMETYPE "image/png"
    DRIVER "GD/PNG"
    EXTENSION "png"
    IMAGEMODE PC256
    TRANSPARENT FALSE
  END
  LAYER
    NAME "Contornos"
    STATUS ON
    CONNECTIONTYPE POSTGIS
    CONNECTION "user=postgres password=post dbname=siguci host=localhost"
    CLASSITEM "contornos"
    DATA "the_geom from contornos"
    TYPE POLYGON    
    CLASS
      NAME "contornos"
      TEMPLATE ""
      STYLE
        SYMBOL 0
        COLOR 0 128 0
        OUTLINECOLOR 0 0 0
      END
   

    END

Alexander Rodríguez Torres.
 Estudiante de Quinto Año.
  Universidad de las Ciencias Informáticas.
   E-mail:atorres at estudiantes.uci.cu