[yocto] ERROR: No manifest generated

[Ravikiran J]

Dear Yocto team,

We have developed some recipe file to install  the firmware binary in the
file system of Yocto.
Recipe file is working fine in *Yocto morty* version but when we tried the
same in the *Yocto sumo* version we got the following error for *bitbake
core-image-minimal*.

*ERROR: core-image-minimal-1.0-r0 do_rootfs: No manifest generated from:
rtl-firmware in
/home/graco_sm/1.4.4/GRACO_SM_REL_V1.1/Software/U-Boot-and-Linux/sumo/poky/meta-graco/recipes-graco/firmware/rtl-firmware.bb
<http://rtl-firmware.bb>*
ERROR: core-image-minimal-1.0-r0 do_rootfs: Function failed: do_rootfs
ERROR: Logfile of failure stored in:
/home/graco_sm/1.4.4/GRACO_SM_REL_V1.1/Software/U-Boot-and-Linux/sumo/poky/build/tmp/work/rzn1d400_graco-poky-linux-gnueabi/core-image-minimal/1.0-r0/temp/log.do_rootfs.28035
ERROR: Task
(/home/graco_sm/1.4.4/GRACO_SM_REL_V1.1/Software/U-Boot-and-Linux/sumo/poky/meta/recipes-core/images/core-image-minimal.bb:do_rootfs)
failed with exit code '1'


Recipe file* rtl-firmware.bb <http://rtl-firmware.bb> *content

DESCRIPTION = "RTL 8723BU BT firmware"

LICENSE = "MIT"
LIC_FILES_CHKSUM =
"file://${COREBASE}/LICENSE;md5=4d92cd373abda3937c2bc47fbc49d690"

PACKAGE_ARCH = "all"

SRC_URI += " \
    file://rtl8723b_fw.bin \
"

do_install () {
    install -d ${D}${base_libdir}/firmware/
    install -m 755 ${WORKDIR}/rtl8723b_fw.bin ${D}${base_libdir}/firmware/
}

FILES_${PN} += " \
        ${base_libdir}/firmware/rtl8723b_fw.bin \
"


What needs to be done for to avoiding manifest error  ?
Kindly help us to resolve this issue.


Thanks and Regards,
Ravikiran J J
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