"Error executing post installation script" during eJabberd 15.07 installation

After clean Debian 8.1 X64 install, trying to install eJabberd server based on this tutorial

http://docs.ejabberd.im/admin/guide/installation/#installing-ejabberd-wi...

At the end of installation, it pops error message

Then I opened log file:


...
Unpacking /opt/ejabberd-15.07/doc/guide.html
Executing final installation script
Error executing post installation script
/opt/ejabberd-15.07/bin/postinstall.sh

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