How to run Supervisor on Debian-7.0-x86_64?

Question

Debian

Packages are installed, but on startup it gives an error

sudo apt-get -f install supervisor
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following NEW packages will be installed:
  supervisor
0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded.
Need to get 0 B/186 kB of archives.
After this operation, 741 kB of additional disk space will be used.
Selecting previously unselected package supervisor.
(Reading database ... 51941 files and directories currently installed.)
Unpacking supervisor (from .../supervisor_3.0a8-1.1+deb7u1_all.deb) ...
Setting up supervisor (3.0a8-1.1+deb7u1) ...
Starting supervisor: Error: Cannot open an HTTP server: socket.error reported errno.ENOENT (2)
For help, use /usr/bin/supervisord -h
invoke-rc.d: initscript supervisor, action "start" failed.
dpkg: error processing supervisor (--configure):
 subprocess installed post-installation script returned error exit status 2
Processing triggers for python-support ...
Errors were encountered while processing:
 supervisor
E: Sub-process /usr/bin/dpkg returned an error code (1)

Tell me what's the matter?