[Qgis-user] Contours generation problem.

[Xero]

Hello I have a problem when trying to generate a contour on a raster. Every
time I start the processus I've got this error message :
/Traitement de l'algorithme ...
AlgorithmDialog
Input parameters:
{ 'BAND' : 1, 'CREATE_3D' : False, 'FIELD_NAME' : 'ELEV', 'IGNORE_NODATA' :
False, 'INPUT' : '/Users/arnomak/Desktop/RDB DEM/Agisoft/DEM.tif',
'INTERVAL' : 10, 'NODATA' : 0, 'OFFSET' : 0, 'OUTPUT' :
'/var/folders/22/h094_46j6fs1y_hp6gf81r800000gn/T/processing_5ac940d3667d4295b56d8931c0ec3a61/813de11bbc234ad792da768934852d05/OUTPUT.shp'
}

GDAL command:
gdal_contour -b 1 -a ELEV -i 10.0 -snodata 0.0 -f "ESRI Shapefile"
"/Users/arnomak/Desktop/RDB DEM/Agisoft/DEM.tif"
"/var/folders/22/h094_46j6fs1y_hp6gf81r800000gn/T/processing_5ac940d3667d4295b56d8931c0ec3a61/813de11bbc234ad792da768934852d05/OUTPUT.shp"
GDAL command output:
/bin/sh: gdal_contour: command not found

Execution completed in 0.07 seconds
Results:
{'OUTPUT': <QgsProcessingOutputLayerDefinition
{'sink':/var/folders/22/h094_46j6fs1y_hp6gf81r800000gn/T/processing_5ac940d3667d4295b56d8931c0ec3a61/813de11bbc234ad792da768934852d05/OUTPUT.shp,
'createOptions': {'fileEncoding': 'System'}}>}

Chargement des couches de résultat
Les couches suivantes n'ont pas été générées correctement *(translation :
following layers haven't been correctly generated)*
/var/folders/22/h094_46j6fs1y_hp6gf81r800000gn/T/processing_5ac940d3667d4295b56d8931c0ec3a61/813de11bbc234ad792da768934852d05/OUTPUT.shp
Vous pouvez vérifier le Panel de messages du journal dans la fenêtre
principale de QGIS pour trouver plus d'informations à propos de l'exécution
de l'algorithme./
Anyone have a clue how to get contours??
Thanks



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