Yocto "imx-yocto-L4.14.98_2.0.0_ga",The following error occurs,Have you had similar problems? How to solve this problem?

[danny_li]

lkqtest@ubuntu:/opt/imx-yocto-bsp/build-x11$ repo sync
fatal: unable to access 'https://source.codeaurora.org/external/imx/imx-manifest/': GnuTLS recv error (-9): A TLS packet with unexpected length was received.
Fetching project meta-browser
Fetching project poky
Fetching projects: 10% (1/10)
Fetching project meta-freescale-distro
Fetching projects: 20% (2/10)
Fetching project meta-freescale
Fetching projects: 30% (3/10)
Fetching project meta-fsl-bsp-release
remote: Counting objects: 269, done.
remote: Compressing objects: 100% (74/74), done.
remote: Total 269 (delta 192), reused 268 (delta 191)
Fetching projects: 40% (4/10)9), 20.00 KiB | 24.00 KiB/s
Fetching project meta-openembedded
Receiving objects: 100% (269/269), 46.37 KiB | 8.00 KiB/s, done.
Resolving deltas: 100% (192/192), completed with 66 local objects.
Fetching projects: 50% (5/10)
Fetching project meta-qt5
From git://git.yoctoproject.org/poky
+ b92e268...16ae14f master-next -> yocto/master-next (forced update)
Fetching projects: 60% (6/10)
Fetching project fsl-community-bsp-base
Fetching projects: 70% (7/10)
Fetching project meta-freescale-3rdparty
Fetching projects: 80% (8/10)
Fetching project repo
Fetching projects: 90% (9/10)
Fetching projects: 100% (10/10)
Fetching projects: 100% (10/10), done.

lkqtest@ubuntu:/opt/imx-yocto-bsp/build-x11$ bitbake core-image-base
WARNING: Host distribution "ubuntu-14.04" has not been validated with this version of the build system; you may possibly experience unexpected failures. It is recommended that you use a tested distribution.
Loading cache: 100% |###########################################################################################################################################| Time: 0:00:52
Loaded 3483 entries from dependency cache.
NOTE: Resolving any missing task queue dependencies

Build Configuration:
BB_VERSION = "1.38.0"
BUILD_SYS = "x86_64-linux"
NATIVELSBSTRING = "ubuntu-14.04"
TARGET_SYS = "arm-poky-linux-gnueabi"
MACHINE = "imx6ull14x14evk"
DISTRO = "fsl-imx-x11"
DISTRO_VERSION = "4.14-sumo"
TUNE_FEATURES = "arm armv7ve vfp thumb neon callconvention-hard cortexa7"
TARGET_FPU = "hard"
meta
meta-poky = "HEAD:c9bd4984f8f471ca2c43052714f4413ba99cf171"
meta-oe
meta-multimedia = "HEAD:8760facba1bceb299b3613b8955621ddaa3d4c3f"
meta-freescale = "HEAD:27ca94f8a4336790ba117b4298566f6820e7e74c"
meta-freescale-3rdparty = "HEAD:82037216280a39957fb4272581637abec734ad50"
meta-freescale-distro = "HEAD:f7e2216e93aff14ac32728a13637a48df436b7f4"
meta-bsp
meta-sdk = "HEAD:8eeb420fad668b733ab95b460895e1c337c66b25"
meta-browser = "HEAD:75640e14e325479c076b6272b646be7a239c18aa"
meta-gnome
meta-networking
meta-python
meta-filesystems = "HEAD:8760facba1bceb299b3613b8955621ddaa3d4c3f"
meta-qt5 = "HEAD:d4e7f73d04e8448d326b6f89908701e304e37d65"

Initialising tasks: 100% |######################################################################################################################################| Time: 0:00:20
NOTE: Executing SetScene Tasks
NOTE: Executing RunQueue Tasks
WARNING: binutils-cross-arm-2.30-r0 do_fetch: Failed to fetch URL git://sourceware.org/git/binutils-gdb.git;branch=binutils-2_30-branch;protocol=git, attempting MIRRORS if available
ERROR: binutils-cross-arm-2.30-r0 do_fetch: Fetcher failure: Fetch command export PSEUDO_DISABLED=1; export DBUS_SESSION_BUS_ADDRESS="unix:abstract=/tmp/dbus-gboQ7vNPL5"; export SSH_AUTH_SOCK="/run/user/1000/keyring-guVCvb/ssh"; export http_proxy="http://localhost:8123"; export PATH="/opt/imx-yocto-bsp/build-x11/tmp/work/x86_64-linux/binutils-cross-arm/2.30-r0/recipe-sysroot-native/usr/bin/texinfo-dummy-native:/opt/imx-yocto-bsp/sources/poky/scripts:/opt/imx-yocto-bsp/build-x11/tmp/work/x86_64-linux/binutils-cross-arm/2.30-r0/recipe-sysroot-native/usr/bin/arm-poky-linux-gnueabi:/opt/imx-yocto-bsp/build-x11/tmp/work/x86_64-linux/binutils-cross-arm/2.30-r0/recipe-sysroot-native/opt/imx-yocto-bsp/build-x11/tmp/work/x86_64-linux/binutils-cross-arm/2.30-r0/recipe-sysroot-native/usr/bin/arm-poky-linux-gnueabi/crossscripts:/opt/imx-yocto-bsp/build-x11/tmp/work/x86_64-linux/binutils-cross-arm/2.30-r0/recipe-sysroot-native/usr/sbin:/opt/imx-yocto-bsp/build-x11/tmp/work/x86_64-linux/binutils-cross-arm/2.30-r0/recipe-sysroot-native/usr/bin:/opt/imx-yocto-bsp/build-x11/tmp/work/x86_64-linux/binutils-cross-arm/2.30-r0/recipe-sysroot-native/sbin:/opt/imx-yocto-bsp/build-x11/tmp/work/x86_64-linux/binutils-cross-arm/2.30-r0/recipe-sysroot-native/bin:/opt/imx-yocto-bsp/sources/poky/bitbake/bin:/opt/imx-yocto-bsp/build-x11/tmp/hosttools"; export HOME="/home/lkqtest"; LANG=C git -c core.fsyncobjectfiles=0 clone --bare --mirror git://sourceware.org/git/binutils-gdb.git /opt/imx-yocto-bsp/downloads//git2/sourceware.org.git.binutils-gdb.git --progress failed with exit code 128, output:
Cloning into bare repository '/opt/imx-yocto-bsp/downloads//git2/sourceware.org.git.binutils-gdb.git'...
fatal: unable to connect to sourceware.org:
sourceware.org: Name or service not known

ERROR: binutils-cross-arm-2.30-r0 do_fetch: Fetcher failure for URL: 'git://sourceware.org/git/binutils-gdb.git;branch=binutils-2_30-branch;protocol=git'. Unable to fetch URL from any source.
ERROR: binutils-cross-arm-2.30-r0 do_fetch: Function failed: base_do_fetch
ERROR: Logfile of failure stored in: /opt/imx-yocto-bsp/build-x11/tmp/work/x86_64-linux/binutils-cross-arm/2.30-r0/temp/log.do_fetch.91804
ERROR: Task (/opt/imx-yocto-bsp/sources/poky/meta/recipes-devtools/binutils/binutils-cross_2.30.bb:do_fetch) failed with exit code '1'
NOTE: Tasks Summary: Attempted 93 tasks of which 92 didn't need to be rerun and 1 failed.

Summary: 1 task failed:
/opt/imx-yocto-bsp/sources/poky/meta/recipes-devtools/binutils/binutils-cross_2.30.bb:do_fetch
Summary: There were 2 WARNING messages shown.
Summary: There were 3 ERROR messages shown, returning a non-zero exit code.
lkqtest@ubuntu:/opt/imx-yocto-bsp/build-x11$

[joanxie]

refer to the yocto user guide:

"The recommended minimum Ubuntu version is 16.04 or later. Earlier versions may cause the Yocto Project build setup to fail, because it requires python versions only available starting with Ubuntu 12.04. See The Yocto Project reference manual for more information."