我在使用petalinux-build时产生下列错误

[INFO ] build system.dtb

[INFO ] build linux/kernel

[INFO ] update linux/u-boot source

[INFO ] generate linux/u-boot configuration files

[INFO ] build linux/u-boot

[INFO ] Setting up stage config

[INFO ] Setting up rootfs config

[INFO ] Updating for armv7a-vfp-neon

[INFO ] Updating package manager

[INFO ] Expanding stagefs

[ERROR] Errors were encountered while processing:

[ERROR] E: Sub-process /share/petalinux-v2014.2-final/tools/packagemanager/bin/dpkg returned an error code (1)

[ERROR] make[2]: *** [.pkg_stagefs] Error 255

[ERROR] make[1]: *** [sub_build_component_/none/packages-repo/single/plnx-repo] Error 2

ERROR: Failed to build linux

不知道有没有人知道错在哪的