App crashing when app:hide_otp is set to "true"

[saqibsoftwares]

It's crashing when app:hide_otp is set to "true". Working perfectly when it's set to "false".

/AndroidRuntime: FATAL EXCEPTION: main
Process: com.aku.myreferrals, PID: 14571
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.aku.myreferrals/com.aku.myreferrals.activities.PinCodeActivity}: android.view.InflateException: Binary XML file line #76: Binary XML file line #76: Error inflating class in.aabhasjindal.otptextview.OtpTextView
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2913)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3048)
at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1808)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:193)
at android.app.ActivityThread.main(ActivityThread.java:6669)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
Caused by: android.view.InflateException: Binary XML file line #76: Binary XML file line #76: Error inflating class in.aabhasjindal.otptextview.OtpTextView
Caused by: android.view.InflateException: Binary XML file line #76: Error inflating class in.aabhasjindal.otptextview.OtpTextView
Caused by: java.lang.reflect.InvocationTargetException
at java.lang.reflect.Constructor.newInstance0(Native Method)
at java.lang.reflect.Constructor.newInstance(Constructor.java:343)
at android.view.LayoutInflater.createView(LayoutInflater.java:647)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:790)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:730)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:863)
at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:824)
at android.view.LayoutInflater.inflate(LayoutInflater.java:515)
at android.view.LayoutInflater.inflate(LayoutInflater.java:423)
at android.view.LayoutInflater.inflate(LayoutInflater.java:374)
at androidx.appcompat.app.AppCompatDelegateImpl.setContentView(AppCompatDelegateImpl.java:699)
at androidx.appcompat.app.AppCompatActivity.setContentView(AppCompatActivity.java:195)
at com.aku.myreferrals.activities.PinCodeActivity.onCreate(PinCodeActivity.java:25)
at android.app.Activity.performCreate(Activity.java:7136)
at android.app.Activity.performCreate(Activity.java:7127)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1271)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2893)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3048)
at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1808)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:193)
at android.app.ActivityThread.main(ActivityThread.java:6669)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
Caused by: android.content.res.Resources$NotFoundException: Resource ID #0xffffff
at android.content.res.ResourcesImpl.getValueForDensity(ResourcesImpl.java:225)
at android.content.res.Resources.getDrawableForDensity(Resources.java:887)
at android.content.res.Resources.getDrawable(Resources.java:827)
at android.content.Context.getDrawable(Context.java:626)
at android.view.View.setBackgroundResource(View.java:21451)
at in.aabhasjindal.otptextview.ItemView.setText(ItemView.java:145)
at in.aabhasjindal.otptextview.OtpTextView.setOTP(OtpTextView.java:177)
at in.aabhasjindal.otptextview.OtpTextView$1.onTextChanged(OtpTextView.java:142)
at android.widget.TextView.sendOnTextChanged(TextView.java:9754)
at android.widget.TextView.setText(TextView.java:5733)
at android.widget.TextView.setText(TextView.java:5571)
at android.widget.EditText.setText(EditText.java:122)
at android.widget.TextView.setText(TextView.java:5528)
at in.aabhasjindal.otptextview.OtpTextView.setOTP(OtpTextView.java:235)
at in.aabhasjindal.otptextview.OtpTextView.generateViews(OtpTextView.java:112)
at in.aabhasjindal.otptextview.OtpTextView.styleEditTexts(OtpTextView.java:69)
at in.aabhasjindal.otptextview.OtpTextView.init(OtpTextView.java:63)
at in.aabhasjindal.otptextview.OtpTextView.(OtpTextView.java:52)
... 28 more