Issue adding camera plugin

Ionic Native
1 
(node:7648) UnhandledPromiseRejectionWarning: Error: cmd: Command failed with ex
it code ENOENT
    at ChildProcess.whenDone (C:\Users\tensor\AppData\Roaming\npm\node_modules\c
ordova\node_modules\cordova-common\src\superspawn.js:169:23)
    at emitOne (events.js:116:13)
    at ChildProcess.emit (events.js:211:7)
    at Process.ChildProcess._handle.onexit (internal/child_process.js:196:12)
    at onErrorNT (internal/child_process.js:372:16)
    at _combinedTickCallback (internal/process/next_tick.js:138:11)
    at process._tickCallback (internal/process/next_tick.js:180:9)
    at Function.Module.runMain (module.js:695:11)
    at startup (bootstrap_node.js:191:16)
    at bootstrap_node.js:612:3
(node:7648) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This
error originated either by throwing inside of an async function without a catch
block, or by rejecting a promise which was not handled with .catch(). (rejection
 id: 1)
(node:7648) [DEP0018] DeprecationWarning: Unhandled promise rejections are depre
cated. In the future, promise rejections that are not handled will terminate the
 Node.js process with a non-zero exit code.