[Tinyos-help] sudo apt-get install gives error

[Neelam Chaubey]

xubuntos at xubuntos:~$ sudo apt-get install graphviz
Reading package lists... Done
Building dependency tree
Reading state information... Done
graphviz is already the newest version.
0 upgraded, 0 newly installed, 0 to remove and 133 not upgraded.
1 not fully installed or removed.
Need to get 0B of archives.
After unpacking 0B of additional disk space will be used.
Setting up tutos2 (2.0.20050413-3.2ubuntu1) ...
chown: cannot access `Neelam:www-data': No such file or directory
chown: cannot access `Neelam': No such file or directory
dpkg: error processing tutos2 (--configure):
 subprocess post-installation script returned error exit status 1
Errors were encountered while processing:
 tutos2
E: Sub-process /usr/bin/dpkg returned an error code (1)

can someone please tell me whats the problem iam not able to figure out

Thanks in advance

-- 
Neelam Chaubey
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