[help with skyui.esp error]

i am using vortex mod manager

 

this was the error

 

 

Error: LOOT operation "loadPlugins" failed: "skyui.esp" is not a valid plugin

at handleResponse (C:\Program Files\Black Tree Gaming Ltd\Vortex\resources\app.asar.unpacked\bundledPlugins\gamebryo-plugin-management\index.js:39:67680)

at Socket.e.on.e (C:\Program Files\Black Tree Gaming Ltd\Vortex\resources\app.asar.unpacked\bundledPlugins\gamebryo-plugin-management\index.js:39:66313)

at Socket.emit (events.js:182:13)

at addChunk (_stream_readable.js:283:12)

at readableAddChunk (_stream_readable.js:264:11)

at Socket.Readable.push (_stream_readable.js:219:10)

at Pipe.onStreamRead [as onread] (internal/stream_base_commons.js:94:17)