Android app crash

Question

i got errorrs.can u please tell me what did i made mistake..my app was begin to crash...

1935-1935/com.example.shaikit.slidingtab E/AndroidRuntime? FATAL EXCEPTION: main

Process: com.example.shaikit.slidingtab, PID: 1935

java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.shaikit.slidingtab/com.example.shaikit.slidingtab.MainActivity}: android.view.InflateException: Binary XML file line #15: Error inflating class com.android4devs.slidingtab.SlidingTabLayout

at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2298)

at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2360)

at android.app.ActivityThread.access$800(ActivityThread.java:144)

at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1278)

at android.os.Handler.dispatchMessage(Handler.java:102)

at android.os.Looper.loop(Looper.java:135)

at android.app.ActivityThread.main(ActivityThread.java:5221)

at java.lang.reflect.Method.invoke(Native Method)

at java.lang.reflect.Method.invoke(Method.java:372)

at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:899)

at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:694)

Caused by: android.view.InflateException: Binary XML file line #15: Error inflating class com.android4devs.slidingtab.SlidingTabLayout

at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:757)

at