How to get the layer name of the WMS in the legend of the user interface

Question

I have a problem with displaying the name of the layer in the legend of the user interface. I prepare the mapfile and I access with the WMS in my local test interface. When I add it to the user interface, the WMS appears but, the name of the layer does not appear in the caption. Here's my mapfile code

LAYER   
    INCLUDE "../shared/ec/ec_getFeatureInfo.map"
    
    NAME "WMS"
    GROUP "Bâtiments"  

    METADATA
        INCLUDE                 "../shared/ec/ec_meta_layer.map"
        "wms_group_title"       "Bâtiments"
        "wms_title"             "Extraction automatique d'empreintes de bâtiments"
        "wms_name"              "automatic_extraction_building_footprint_fr"
        "wms_server_version"    "1.3.0"
        "wms_format"            "image/png"
        "wms_dataurl_format"    "igo"
        "wms_dataurl_href"      "https://ouvert.canada.ca/data/fr/dataset/7a5cda52-c7df-427f-9ced-26f19a8a64d6"
        "wms_dataurl_format"    "text/html"
    END
    
    #MAXSCALE 10000000
    
    CONNECTION "http://cartes.geogratis.gc.ca/wms/automatic_extraction_building_footprint_fr?"
    CONNECTIONTYPE WMS
    TYPE RASTER
    
    PROJECTION
        "init=epsg:4269"    
    END
END

• here the display of the WMS to test it on my local server, in the legend the name of the layer appears

However in the user interface, it does not appear.

There would be a lack of functionality in the mapfile for the name of the layer to appear in the legend?