宝塔面板突然无法登录

[root@localhost ~]# bt
cat: /www/server/panel/data/port.pl: No such file or directory
Traceback (most recent call last):
  File "/www/server/panel/tools.py", line 18, in <module>
    import public, time, json
  File "/www/server/panel/class/public.py", line 13, in <module>
    import json,os,sys,time,re,socket,importlib,binascii,base64,string,psutil
ImportError: No module named psutil
[root@localhost ~]#