[MapServer-users] MVT Unable to initialize image

[mathias cunault]

Mapserver 7.6
I try to create MapBox vectorTile to use with Openlayers.
Here is my mapfile :
MAP
NAME " WFS Prescription"

SIZE 256 256

FONTSET "C:\ms4w\Apache\site\fonts\fonts.txt"

OUTPUTFORMAT
NAME "mvt"
DRIVER "MVT"
MIMETYPE "application/vnd.mapbox-vector-tile"
EXTENSION "pbf"
  END

EXTENT -7029101.058003008 -2435968.9856906775 6204182.853414171
6634638.986072871 #xmin ymin xmax ymax

UNITS METERS
DEBUG 5
CONFIG "CPL_DEBUG" "ON"
CONFIG "PROJ_DEBUG" "ON"
CONFIG MS_ERRORFILE
"C:/ms4w/Apache/error/errorMapFile_prescription_pgts.txt"

SYMBOLSET "C:\ms4w\Apache\site\symbols\symbols.sym"

PROJECTION # proj de sortie
"init=epsg:3857"
END

WEB
METADATA
"wfs_title" "WFS-Inrap, Prescription"
"wfs_onlineresource" "http://
.../mapserv.exe?MAP=C:/ms4w/Apache/site/mapfile/vue_prescription_pgts_wfs.map&"
"wfs_srs" "EPSG:3857 EPSG:900913"
"wfs_enable_request" "*"
"wfs_abstract" "WFS diffusant la couche prescrition_pgts de Caviar pour
l'application Iliad."
"wms_srs" "EPSG:3857"
END #fin metadata
END #end web

LAYER
NAME "prescription"
TYPE POLYGON
CONNECTIONTYPE POSTGIS
CONNECTION "host=xxxx dbname=xxx user=xxx password=xxx port=5432"
DATA "geom from iliad.prescription_pgts as foo using unique gid using
SRID=3857"
PROCESSING "CLOSE_CONNECTION=DEFER"
#PROCESSING "TILE_DATASET=true"
METADATA
"gml_include_items" "all" #obligé pour afficher attributs getfeatureinfo
"wfs_title" "Inrap Prescription"
"wfs_srs" "EPSG:3857" car le même que section WEB, inutile.
"ows_featureid" "gid"
"wfs_enable_request" "*"
"wfs_getfeature_formatlist" "geojson, application/json, json"
"wfs_use_default_extent_for-getfeature" "false"
END #fin metadata prescription
TEMPLATE "bidon.html" #obligé pour afficher attributs getfeatureinfo
END #fin layer prescription
END

First, I test with a request like :
http://
.../mapserv.exe?MAP=C:/ms4w/Apache/site/mapfile/vue_prescription_pgts_wfs.map&mode=tile&tilemode=gmap&tile={12}+{447}+{1988}&layers=prescription&
All I get is :
msDrawMap(): Image handling error. Unable to initialize image.
msPrepareImage(): Image handling error. Unable to initialize image.

SUPPORTS=PBF is in mapserv.exe -v
EXTENT is that of my data.
I did not find any leads in RFC-119 (but I don't understand all that I
read.)
I have no idea how to solve this problem.

Cordialement,

*----------*
*Mathias Cunault*

*référent SIG / Admin Caviar*

*Inrap Tours - 148 av. Maginot37000 TOURS06 32 05 98 96*
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