Luci突然无法登陆了

cROS***

点登录按钮提示如下，这是怎么回事？

/usr/lib/lua/luci/dispatcher.lua:448: Failed to execute function dispatcher target for entry '/'.
The called action terminated with an exception:
/usr/lib/lua/luci/sauth.lua:87: Session data invalid!
stack traceback:
        [C]: in function 'assert'
        /usr/lib/lua/luci/dispatcher.lua:448: in function 'dispatch'
        /usr/lib/lua/luci/dispatcher.lua:195: in function </usr/lib/lua/luci/dispatcher.lua:194>

roh***

今天我们的也这样子了，配置一个参数的时候，突然就退出了，登录不进去，然后串口登录后，删除/tmp/luci-sessions后就可以重新登录了