from seaserv import FILE_SERVER_ROOT, FILE_SERVER_PORT, SERVICE_URL ImportError: No module named seaserv

Now initializing seahub database, please wait…

Traceback (most recent call last):
File “manage.py”, line 10, in
execute_from_command_line(sys.argv)
File “/usr/lib/python2.7/site-packages/Django-1.8.16-py2.7.egg/django/core/management/init.py”, line 354, in execute_from_command_line
utility.execute()
File “/usr/lib/python2.7/site-packages/Django-1.8.16-py2.7.egg/django/core/management/init.py”, line 303, in execute
settings.INSTALLED_APPS
File “/usr/lib/python2.7/site-packages/Django-1.8.16-py2.7.egg/django/conf/init.py”, line 48, in getattr
self._setup(name)
File “/usr/lib/python2.7/site-packages/Django-1.8.16-py2.7.egg/django/conf/init.py”, line 44, in _setup
self._wrapped = Settings(settings_module)
File “/usr/lib/python2.7/site-packages/Django-1.8.16-py2.7.egg/django/conf/init.py”, line 92, in init
mod = importlib.import_module(self.SETTINGS_MODULE)
File “/usr/lib64/python2.7/importlib/init.py”, line 37, in import_module
import(name)
File “/data/haiwen/seafile-server/seahub/seahub/init.py”, line 3, in
from handlers import repo_created_cb, repo_deleted_cb
File “/data/haiwen/seafile-server/seahub/seahub/handlers.py”, line 4, in
import settings
File “/data/haiwen/seafile-server/seahub/seahub/settings.py”, line 9, in
from seaserv import FILE_SERVER_ROOT, FILE_SERVER_PORT, SERVICE_URL
ImportError: No module named seaserv
Error: Seahub syncdb failed
按照步骤编译源码,在seafile-admin setup 后出现这个错误,有人知道为啥吗

系统是centos7