Build failed with agl-sota for rpi3

 I tried to build an image with the agl-sota functionnality:

I ensure that ${METADIR}/meta-updater-raspberrypi is added at BBLAYERS  in bblayers.conf, then I run

Build fails with the following error:

The file uImage-bcm2710-rpi-3-b-plus.dtb is indeed missing.

Please find in the attachements the content of  the workspace-agl/build/tmp/deploy/images/raspberrypi3/ directory given by "ls -l".

What I could see so far is that meta-updater sets KERNEL_IMAGETYPE to "fitImage", then linux-raspberrypi recipe creates dtb files with a "zImage" prefix (is it the expected behavior?) and eventually create-combined-dtb task is looking for dtb files with a "uImage" prefix.

Any advice?

PS: build without agl-sota option runs successfully.