Build issue when adding Cordova plugin

I am trying to build an app including the two plugins called cordova-plugin-qrscanner and cordova-plugin-camera-preview. I started out by including the cordova-plugin-qrscanner and the app worked fine until I added cordova-plugin-camera-preview in my config.xml. It seems as if I can't use these two camera plugins together in the app. The error message I received was:

Element uses-feature#android.hardware.camera at AndroidManifest.xml:19:5-60 duplicated with element declared at AndroidManifest.xml:17:5-85
/project/AndroidManifest.xml:21:5-65 Error:
Element uses-permission#android.permission.CAMERA at AndroidManifest.xml:21:5-65 duplicated with element declared at AndroidManifest.xml:16:5-90

The error log I received on phonegap's website can be seen below together with my config.xml. The app-id is 2395740 and I also posted this in phonegap's forum, https://forums.adobe.com/thread/2250560. Thanks in advance.

Build Date: 2016-12-14 11:28:22 +0000
--------------------------------------------------------------------------------
PLUGIN OUTPUT
--------------------------------------------------------------------------------
Fetching plugin "cordova-plugin-qrscanner" via npm
Installing "cordova-plugin-qrscanner" at "2.4.0" for android
Fetching plugin "cordova-plugin-compat" via npm
Installing "cordova-plugin-compat" at "1.1.0" for android
Fetching plugin "cordova-plugin-camera-preview" via npm
Installing "com.mbppower.camerapreview" at "0.0.8" for android
--------------------------------------------------------------------------------
COMPILE OUTPUT
--------------------------------------------------------------------------------
Configuration on demand is an incubating feature.
Incremental java compilation is an incubating feature.
:preBuild UP-TO-DATE
:preDebugBuild UP-TO-DATE
:checkDebugManifest
:preReleaseBuild UP-TO-DATE
:CordovaLib:preBuild UP-TO-DATE
:CordovaLib:preDebugBuild UP-TO-DATE
:CordovaLib:compileDebugNdk UP-TO-DATE
:CordovaLib:compileLint
:CordovaLib:copyDebugLint UP-TO-DATE
:CordovaLib:mergeDebugProguardFiles
:CordovaLib:packageDebugRenderscript UP-TO-DATE
:CordovaLib:checkDebugManifest
:CordovaLib:prepareDebugDependencies
:CordovaLib:compileDebugRenderscript
:CordovaLib:generateDebugResValues
:CordovaLib:generateDebugResources
:CordovaLib:packageDebugResources
:CordovaLib:compileDebugAidl
:CordovaLib:generateDebugBuildConfig
:CordovaLib:mergeDebugShaders
:CordovaLib:compileDebugShaders
:CordovaLib:generateDebugAssets
:CordovaLib:mergeDebugAssets
:CordovaLib:processDebugManifest
:CordovaLib:processDebugResources
:CordovaLib:generateDebugSources
:CordovaLib:incrementalDebugJavaCompilationSafeguard
:CordovaLib:compileDebugJavaWithJavac
:CordovaLib:compileDebugJavaWithJavac - is not incremental (e.g. outputs have changed, no previous execution, etc.).
Note: Some input files use or override a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
:CordovaLib:processDebugJavaRes UP-TO-DATE
:CordovaLib:transformResourcesWithMergeJavaResForDebug
:CordovaLib:transformClassesAndResourcesWithSyncLibJarsForDebug
:CordovaLib:mergeDebugJniLibFolders
:CordovaLib:transformNative_libsWithMergeJniLibsForDebug
:CordovaLib:transformNative_libsWithSyncJniLibsForDebug
:CordovaLib:bundleDebug
:CordovaLib:preReleaseBuild UP-TO-DATE
:CordovaLib:compileReleaseNdk UP-TO-DATE
:CordovaLib:copyReleaseLint UP-TO-DATE
:CordovaLib:mergeReleaseProguardFiles
:CordovaLib:packageReleaseRenderscript UP-TO-DATE
:CordovaLib:checkReleaseManifest
:CordovaLib:prepareReleaseDependencies
:CordovaLib:compileReleaseRenderscript
:CordovaLib:generateReleaseResValues
:CordovaLib:generateReleaseResources
:CordovaLib:packageReleaseResources
:CordovaLib:compileReleaseAidl
:CordovaLib:generateReleaseBuildConfig
:CordovaLib:mergeReleaseShaders
:CordovaLib:compileReleaseShaders
:CordovaLib:generateReleaseAssets
:CordovaLib:mergeReleaseAssets
:CordovaLib:processReleaseManifest
:CordovaLib:processReleaseResources
:CordovaLib:generateReleaseSources
:CordovaLib:incrementalReleaseJavaCompilationSafeguard
:CordovaLib:compileReleaseJavaWithJavac
:CordovaLib:compileReleaseJavaWithJavac - is not incremental (e.g. outputs have changed, no previous execution, etc.).
Note: Some input files use or override a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
:CordovaLib:processReleaseJavaRes UP-TO-DATE
:CordovaLib:transformResourcesWithMergeJavaResForRelease
:CordovaLib:transformClassesAndResourcesWithSyncLibJarsForRelease
:CordovaLib:mergeReleaseJniLibFolders
:CordovaLib:transformNative_libsWithMergeJniLibsForRelease
:CordovaLib:transformNative_libsWithSyncJniLibsForRelease
:CordovaLib:bundleRelease
:prepareComAndroidSupportAppcompatV72310Library
:prepareComAndroidSupportSupportV42310Library
:prepareComJourneyappsZxingAndroidEmbedded330Library
:prepareProjectCordovaLibUnspecifiedDebugLibrary
:prepareDebugDependencies
:compileDebugAidl
:compileDebugRenderscript
:generateDebugBuildConfig
:mergeDebugShaders
:compileDebugShaders
:generateDebugAssets
:mergeDebugAssets
:generateDebugResValues
:generateDebugResources
:mergeDebugResources
:processDebugManifest/project/AndroidManifest.xml:19:5-60 Error:
Element uses-feature#android.hardware.camera at AndroidManifest.xml:19:5-60 duplicated with element declared at AndroidManifest.xml:17:5-85
/project/AndroidManifest.xml:21:5-65 Error:
Element uses-permission#android.permission.CAMERA at AndroidManifest.xml:21:5-65 duplicated with element declared at AndroidManifest.xml:16:5-90
/project/AndroidManifest.xml Error:
Validation failed, exiting

See http://g.co/androidstudio/manifest-merger for more information about the manifest merger.

:processDebugManifest FAILED

FAILURE: Build failed with an exception.

• What went wrong:
  Execution failed for task ':processDebugManifest'.
  > Manifest merger failed with multiple errors, see logs

• Try:
  Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.

BUILD FAILED

Total time: 2.246 secs
Error: /project/gradlew: Command failed with exit code 1 Error output:
Note: Some input files use or override a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
Note: Some input files use or override a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
/project/AndroidManifest.xml:19:5-60 Error:
Element uses-feature#android.hardware.camera at AndroidManifest.xml:19:5-60 duplicated with element declared at AndroidManifest.xml:17:5-85
/project/AndroidManifest.xml:21:5-65 Error:
Element uses-permission#android.permission.CAMERA at AndroidManifest.xml:21:5-65 duplicated with element declared at AndroidManifest.xml:16:5-90
/project/AndroidManifest.xml Error:
Validation failed, exiting

FAILURE: Build failed with an exception.

• What went wrong:
  Execution failed for task ':processDebugManifest'.
  > Manifest merger failed with multiple errors, see logs

• Try:
  Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.
  at ChildProcess.whenDone (/project/cordova/node_modules/cordova-common/src/superspawn.js:169:23)
  at emitTwo (events.js:106:13)
  at ChildProcess.emit (events.js:191:7)
  at maybeClose (internal/child_process.js:877:16)
  at Process.ChildProcess._handle.onexit (internal/child_process.js:226:5)

<------------------>
My config.xml:

<?xml version="1.0" encoding="UTF-8" ?>
<widget xmlns = "http://www.w3.org/ns/widgets"
xmlns:gap = "http://phonegap.com/ns/1.0"
id = "com.cent21.example"
versionCode ="1"
version = "1.0.0">
<preference name="android-targetSdkVersion" value="14" />
<gap:config-file platform="ios" parent="CFBundleVersion">
<string>1.0.0</string>
</gap:config-file>

<name>Example</name>

<description>
</description>

<author href="https://www.somewebsite.se" email="support@email.se">
SomeCompany
</author>
<gap:plugin name="cordova-plugin-qrscanner" source="npm"/>
<gap:plugin name="cordova-plugin-camera-preview" source="npm"/>
<gap:platform name="android" />
<gap:platform name="ios" />
</widget>