Unable to upgrade multimedia/gstreamer1-plugins

Hi,

Despite the fact that multimedia/gstreamer1 has been upgraded (and to be 
sure, force-rebuilt one more time), gstreamer1-plugins won't link :

ld: error: undefined symbol: gst_dsd_format_get_type
 >>> referenced by GstAudio-1.0.c:766 
(tmp-introspect7hh7sli_/GstAudio-1.0.c:766)
 >>> 
/usr/ports/multimedia/gstreamer1-plugins/work/gst-plugins-base-1.24.8/_build/tmp-introspect7hh7sli_/GstAudio-1.0.o:(GI_GET_TYPE_FUNCS_)
ld: error: undefined symbol: gst_dsd_info_get_type
 >>> referenced by GstAudio-1.0.c:766 
(tmp-introspect7hh7sli_/GstAudio-1.0.c:766)
 >>> 
/usr/ports/multimedia/gstreamer1-plugins/work/gst-plugins-base-1.24.8/_build/tmp-introspect7hh7sli_/GstAudio-1.0.o:(GI_GET_TYPE_FUNCS_)
ld: error: undefined symbol: gst_dsd_plane_offset_meta_api_get_type
 >>> referenced by GstAudio-1.0.c:766 
(tmp-introspect7hh7sli_/GstAudio-1.0.c:766)
 >>> 
/usr/ports/multimedia/gstreamer1-plugins/work/gst-plugins-base-1.24.8/_build/tmp-introspect7hh7sli_/GstAudio-1.0.o:(GI_GET_TYPE_FUNCS_)

What can cause this problem ?

Regards,

Xavier

-- 
Xavier HUMBERT - Unix/Win/MacOSX Sysadmin/Network Engineer
https://www.amdh.fr