求助，安装Zope后执行出现错误。

suncrow

编译安装都通过，
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[root@MagicLinux Zope-2.8.1-final]# /usr/local/zope/instance1/bin/runzope
Traceback (most recent call last):
  File "/usr/local/zope/lib/python/Zope2/Startup/run.py", line 56, in?
    run()
  File "/usr/local/zope/lib/python/Zope2/Startup/run.py", line 21, inrun
    starter.prepare()
  File "/usr/local/zope/lib/python/Zope2/Startup/__init__.py", line 94, in prepare
    self.dropPrivileges()
  File "/usr/local/zope/lib/python/Zope2/Startup/__init__.py", line 213, in dropPrivileges
    return dropPrivileges(self.cfg)
  File "/usr/local/zope/lib/python/Zope2/Startup/__init__.py", line 382, in dropPrivileges
    raise ZConfig.ConfigurationError(msg)
ZConfig.ConfigurationError: A user was not specified to setuid to; fix this to start as root (change the effective-user directive in zope.conf)
[/code:1]