Node.js error

I am facing issue while running a node.js script , when i am trying to follow the expres js installation steps i am getting Setting up pure-ftpd-mysql (1.0.49-4) …
/var/lib/dpkg/info/pure-ftpd-mysql.postinst: 34: update-inetd: not found
dpkg: error processing package pure-ftpd-mysql (–configure):
installed pure-ftpd-mysql package post-installation script subprocess returned error exit status 127
Errors were encountered while processing:
E: Sub-process /usr/bin/dpkg returned an error code (1)
root@server:/home/ ,

any one can help me over any desk please?