Ideviceinstaller Usage Error

I get the following error:

[iOS] Could not remove 'com.test.test' from device
[MJSONWP] Encountered internal error running command: Error: Command failed: ideviceinstaller -u <UDID> -u com.test.test
WARNING: Using "-u" for "--uninstall" is deprecated. Please use "-U" instead.

at ChildProcess.exithandler (child_process.js:202:12)
at emitTwo (events.js:106:13)
at ChildProcess.emit (events.js:191:7)
at maybeClose (internal/child_process.js:850:16)
at Socket.<anonymous> (internal/child_process.js:323:11)
at emitOne (events.js:96:13)
at Socket.emit (events.js:188:7)
at Pipe._handle.close [as _onclose] (net.js:492:12)

Any idea why this is? I scoured my project for ideviceinstaller and was unable to find it. Is this apart of Appium?

What are you exactly trying to do , install an app automatically using Appium via idevice?

Or separately running idevice?