submin2.2.1安装配置完成后，建仓库报错：Failed to impor?报错

在CentOS release 6.4 (Final)下，安装bitnami-subversion-1.8.13+submin2.2.1配置完成后，新建仓库报错：Failed to import python 'svn' module, please install.

This should never happen! Please tell the administrator this error message and what caused it. Technical details (if any):

Traceback (most recent call last):
  File "/usr/lib/python2.6/site-packages/submin/dispatch/dispatcher.py", line 61, in dispatcher
    response = handler(request, path)
  File "/usr/lib/python2.6/site-packages/submin/auth/decorators.py", line 23, in _decorator
    return fun(self, *args, **kwargs)
  File "/usr/lib/python2.6/site-packages/submin/views/repositories.py", line 37, in handler
    return self.add(req, path[1:], templatevars)
  File "/usr/lib/python2.6/site-packages/submin/auth/decorators.py", line 23, in _decorator
    return fun(self, *args, **kwargs)
  File "/usr/lib/python2.6/site-packages/submin/auth/decorators.py", line 32, in _decorator
    return fun(self, *args, **kwargs)
  File "/usr/lib/python2.6/site-packages/submin/views/repositories.py", line 115, in add
    a = Repository(reposname, vcs_type)
  File "/usr/lib/python2.6/site-packages/submin/models/repository.py", line 89, in __init__
    self.repository = vcs.Repository(repositoryname)
  File "/usr/lib/python2.6/site-packages/submin/plugins/vcs/svn/repository.py", line 90, in __init__
    raise VCSImportError("Failed to import python 'svn' module, please install")
VCSImportError: Failed to import python 'svn' module, please install