Can't import

[AndroidDeveloperLB]

I get this error, even after I try to update all that's possible to update:

C:\Users\user\Desktop\GLWallpaperVideoDemo-master1\app\src\main\java\frankandrobot\glwallpapervideodemo\com\GLWallpaperVideoDemo.java:3: error: package net.rbgrn.android.glwallpaperservice does not exist
import net.rbgrn.android.glwallpaperservice.;
^
C:\Users\user\Desktop\GLWallpaperVideoDemo-master1\app\src\main\java\frankandrobot\glwallpapervideodemo\com\GLWallpaperVideoDemo.java:44: error: cannot find symbol
public class GLWallpaperVideoDemo extends GLWallpaperService {
^
symbol: class GLWallpaperService
C:\Users\user\Desktop\GLWallpaperVideoDemo-master1\app\src\main\java\frankandrobot\glwallpapervideodemo\com\GLWallpaperVideoDemo.java:125: error: cannot find symbol
class VideoEngine extends GLEngine {
^
symbol: class GLEngine
location: class GLWallpaperVideoDemo
C:\Users\user\Desktop\GLWallpaperVideoDemo-master1\app\src\main\java\frankandrobot\glwallpapervideodemo\com\GLWallpaperVideoDemo.java:119: error: cannot find symbol
public Engine onCreateEngine() {
^
symbol: class Engine
location: class GLWallpaperVideoDemo
C:\Users\user\Desktop\GLWallpaperVideoDemo-master1\app\src\main\java\frankandrobot\glwallpapervideodemo\com\VideoRenderer.java:11: error: package net.rbgrn.android.glwallpaperservice does not exist
import net.rbgrn.android.glwallpaperservice.;
^
C:\Users\user\Desktop\GLWallpaperVideoDemo-master1\app\src\main\java\frankandrobot\glwallpapervideodemo\com\VideoRenderer.java:38: error: package GLWallpaperService does not exist
public class VideoRenderer implements GLWallpaperService.Renderer {
^
C:\Users\user\Desktop\GLWallpaperVideoDemo-master1\app\src\main\java\frankandrobot\glwallpapervideodemo\com\GLWallpaperVideoDemo.java:57: error: method does not override or implement a method from a supertype
@OverRide
^
C:\Users\user\Desktop\GLWallpaperVideoDemo-master1\app\src\main\java\frankandrobot\glwallpapervideodemo\com\GLWallpaperVideoDemo.java:60: error: cannot find symbol
super.onCreate();
^
symbol: variable super
location: class GLWallpaperVideoDemo
C:\Users\user\Desktop\GLWallpaperVideoDemo-master1\app\src\main\java\frankandrobot\glwallpapervideodemo\com\GLWallpaperVideoDemo.java:79: error: cannot find symbol
AssetManager assetManager = getAssets();
^
symbol: method getAssets()
location: class GLWallpaperVideoDemo
C:\Users\user\Desktop\GLWallpaperVideoDemo-master1\app\src\main\java\frankandrobot\glwallpapervideodemo\com\GLWallpaperVideoDemo.java:109: error: method does not override or implement a method from a supertype
@OverRide
^
C:\Users\user\Desktop\GLWallpaperVideoDemo-master1\app\src\main\java\frankandrobot\glwallpapervideodemo\com\GLWallpaperVideoDemo.java:112: error: cannot find symbol
super.onDestroy();
^
symbol: variable super
location: class GLWallpaperVideoDemo
C:\Users\user\Desktop\GLWallpaperVideoDemo-master1\app\src\main\java\frankandrobot\glwallpapervideodemo\com\GLWallpaperVideoDemo.java:118: error: method does not override or implement a method from a supertype
@OverRide
^
C:\Users\user\Desktop\GLWallpaperVideoDemo-master1\app\src\main\java\frankandrobot\glwallpapervideodemo\com\GLWallpaperVideoDemo.java:134: error: cannot find symbol
setRenderer(renderer);
^
symbol: method setRenderer(VideoRenderer)
location: class GLWallpaperVideoDemo.VideoEngine
C:\Users\user\Desktop\GLWallpaperVideoDemo-master1\app\src\main\java\frankandrobot\glwallpapervideodemo\com\GLWallpaperVideoDemo.java:136: error: cannot find symbol
setRenderMode(RENDERMODE_CONTINUOUSLY);
^
symbol: variable RENDERMODE_CONTINUOUSLY
location: class GLWallpaperVideoDemo.VideoEngine
C:\Users\user\Desktop\GLWallpaperVideoDemo-master1\app\src\main\java\frankandrobot\glwallpapervideodemo\com\GLWallpaperVideoDemo.java:141: error: method does not override or implement a method from a supertype
@OverRide
^
C:\Users\user\Desktop\GLWallpaperVideoDemo-master1\app\src\main\java\frankandrobot\glwallpapervideodemo\com\GLWallpaperVideoDemo.java:144: error: cannot find symbol
super.onCreate(surfaceHolder);
^
symbol: variable super
location: class GLWallpaperVideoDemo.VideoEngine
C:\Users\user\Desktop\GLWallpaperVideoDemo-master1\app\src\main\java\frankandrobot\glwallpapervideodemo\com\GLWallpaperVideoDemo.java:147: error: method does not override or implement a method from a supertype
@OverRide
^
C:\Users\user\Desktop\GLWallpaperVideoDemo-master1\app\src\main\java\frankandrobot\glwallpapervideodemo\com\GLWallpaperVideoDemo.java:150: error: cannot find symbol
super.onDestroy();
^
symbol: variable super
location: class GLWallpaperVideoDemo.VideoEngine
C:\Users\user\Desktop\GLWallpaperVideoDemo-master1\app\src\main\java\frankandrobot\glwallpapervideodemo\com\GLWallpaperVideoDemo.java:157: error: method does not override or implement a method from a supertype
@OverRide
^
C:\Users\user\Desktop\GLWallpaperVideoDemo-master1\app\src\main\java\frankandrobot\glwallpapervideodemo\com\GLWallpaperVideoDemo.java:161: error: cannot find symbol
super.onSurfaceChanged(holder, format, w, h);
^
symbol: variable super
location: class GLWallpaperVideoDemo.VideoEngine
C:\Users\user\Desktop\GLWallpaperVideoDemo-master1\app\src\main\java\frankandrobot\glwallpapervideodemo\com\GLWallpaperVideoDemo.java:164: error: method does not override or implement a method from a supertype
@OverRide
^
C:\Users\user\Desktop\GLWallpaperVideoDemo-master1\app\src\main\java\frankandrobot\glwallpapervideodemo\com\GLWallpaperVideoDemo.java:167: error: cannot find symbol
super.onSurfaceCreated(holder);
^
symbol: variable super
location: class GLWallpaperVideoDemo.VideoEngine
C:\Users\user\Desktop\GLWallpaperVideoDemo-master1\app\src\main\java\frankandrobot\glwallpapervideodemo\com\GLWallpaperVideoDemo.java:170: error: method does not override or implement a method from a supertype
@OverRide
^
C:\Users\user\Desktop\GLWallpaperVideoDemo-master1\app\src\main\java\frankandrobot\glwallpapervideodemo\com\GLWallpaperVideoDemo.java:173: error: cannot find symbol
super.onSurfaceDestroyed(holder);
^
symbol: variable super
location: class GLWallpaperVideoDemo.VideoEngine
C:\Users\user\Desktop\GLWallpaperVideoDemo-master1\app\src\main\java\frankandrobot\glwallpapervideodemo\com\GLWallpaperVideoDemo.java:176: error: method does not override or implement a method from a supertype
@OverRide
^
C:\Users\user\Desktop\GLWallpaperVideoDemo-master1\app\src\main\java\frankandrobot\glwallpapervideodemo\com\GLWallpaperVideoDemo.java:179: error: cannot find symbol
super.onVisibilityChanged(visible);
^
symbol: variable super
location: class GLWallpaperVideoDemo.VideoEngine
26 errors
:app:compileDebugJavaWithJavac FAILED

FAILURE: Build failed with an exception.

• What went wrong:
  Execution failed for task ':app:compileDebugJavaWithJavac'.

Compilation failed; see the compiler error output for details.

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

• Get more help at https://help.gradle.org

BUILD FAILED in 2s
14 actionable tasks: 14 executed