从4升级6后启动seahub失败

报错如下:
[
root@iamca seafile-server-6.0.9]# ./seahub.sh start

LC_ALL is not set in ENV, set to en_US.UTF-8
Starting seahub at port 8000 …
Error:Seahub failed to start.
Please try to run “./seahub.sh start” again
[root@iamca seafile-server-6.0.9]#

运行 ./seahub.sh start-fastcgi 看看报什么错误。