ubuntu无法apt-get, grub-pc出错

在ubuntu16.04系统下进行操作

sudo apt-get install pyth-qt4on

所有的apt-get均会报错,
报错如下:

Setting up grub-pc (2.02~beta2-36ubuntu3.20) ...
dpkg: error processing package grub-pc (--configure):
 subprocess installed post-installation script returned error exit status 10
dpkg: dependency problems prevent configuration of grub-gfxpayload-lists:
 grub-gfxpayload-lists depends on grub-pc (>= 1.99~20101210-1ubuntu2); however:
  Package grub-pc is not configured yet.

dpkg: error processing package grub-gfxpayload-lists (--configure):
 dependency problems - leaving unconfigured
No apport report written because the error message indicates its a followup error from a previous failure.
Errors were encountered while processing:
 grub-pc
 grub-gfxpayload-lists
E: Sub-process /usr/bin/dpkg returned an error code (1
)

试了谷歌上面的各种方法均未解决,看看各位大佬有没有什么方法

源不对吧,换下更新源试试。