警告:您指定的主目录 /var/lib/dradis 已存在

警告:您指定的主目录 /var/lib/dradis 已存在

我遇到了网络管理器问题并且无法访问它...它说网络管理器与此版本不兼容..

我尝试重新安装,但安装时出现以下错误

sudo apt-get --reinstall install network-manager
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following packages were automatically installed and are no longer required:
  gdebi-core imagemagick-common libegl1-mesa-drivers libpython3.4-minimal
  libpython3.4-stdlib python3.4 python3.4-minimal
Use 'sudo apt autoremove' to remove them.
0 upgraded, 0 newly installed, 1 reinstalled, 0 to remove and 493 not upgraded.
1 not fully installed or removed.
Need to get 0 B/2,368 kB of archives.
After this operation, 0 B of additional disk space will be used.
(Reading database ... 338228 files and directories currently installed.)
Preparing to unpack .../network-manager_1.4.2-3_amd64.deb ...
Unpacking network-manager (1.4.2-3) over (1.4.2-3) ...
Setting up dradis (3.1.0~rc2+git20160609-0kali2) ...
Warning: The home dir /var/lib/dradis you specified already exists.
The system user `dradis' already exists. Exiting.
Could not find rake-11.2.2 in any of the sources
Run `bundle install` to install missing gems.
dpkg: error processing package dradis (--configure):
 subprocess installed post-installation script returned error exit status 7
Setting up network-manager (1.4.2-3) ...
Processing triggers for systemd (215-17+deb8u1) ...
Processing triggers for man-db (2.7.5-2) ...
Processing triggers for dbus (1.10.14-1) ...
Errors were encountered while processing:
 dradis
E: Sub-process /usr/bin/dpkg returned an error code (1)

请帮忙解决这个问题...我是 Linux 的初学者

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