openwrt 报错：module ‘luci.cbi‘ not found

报错信息如下

/usr/lib/lua/luci/dispatcher.lua:1334: module 'luci.cbi' not found:
    no field package.preload['luci.cbi']
    no file './luci/cbi.lua'
    no file '/usr/share/lua/luci/cbi.lua'
    no file '/usr/share/lua/luci/cbi/init.lua'
    no file '/usr/lib/lua/luci/cbi.lua'
    no file '/usr/lib/lua/luci/cbi/init.lua'
    no file './luci/cbi.so'
    no file '/usr/lib/lua/luci/cbi.so'
    no file '/usr/lib/lua/loadall.so'
    no file './luci.so'
    no file '/usr/lib/lua/luci.so'
    no file '/usr/lib/lua/loadall.so'
stack traceback:
    [C]: in function 'require'
    /usr/lib/lua/luci/dispatcher.lua:1334: in function '_cbi'
    /usr/lib/lua/luci/dispatcher.lua:1023: in function 'dispatch'
    /usr/lib/lua/luci/dispatcher.lua:478: in function </usr/lib/lua/luci/dispatcher.lua:477>

解决方法

opkg update
opkg install luci luci-base luci-compat