My Logcat full of input svInfo.flags is 8

Question

I converted Java file to Kotlin file. It happen when I click button from Dashboard and keep stopped working.

My logcat is full of input svInfo.flags is 8.

How to solve it? I've already closed GPS and added this activity to AndroidManifest.

From logcat,there are problem in setupStepView() but I don't what problem is?

class BookingActivity : AppCompatActivity() {
    @BindView(R.id.step_view)
    var stepView: StepView? = null

    @BindView(R.id.view_pager)
    var viewPager: ViewPager? = null

    @BindView(R.id.btn_next_step)
    var btn_next_step: Button? = null

    @BindView(R.id.btn_previous_step)
    var btn_previous_step: Button? = null
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_booking)
        ButterKnife.bind(this@BookingActivity)
        setupStepView()
        setColorButton()

        //View
        viewPager!!.adapter = MyViewPagerAdapter(supportFragmentManager)
        viewPager!!.addOnPageChangeListener(object : OnPageChangeListener {
            override fun onPageScrolled(
                position: Int,
                positionOffset: Float,
                positionOffsetPixels: Int)
            {
            }

            override fun onPageSelected(position: Int) {
                if (position == 0) {
                    btn_previous_step!!.isEnabled = false }
                    else {
                    btn_previous_step!!.isEnabled = true
                    setColorButton()
                }
            }

            override fun onPageScrollStateChanged(state: Int) {

            }
        }
        )
    }

    private fun setupStepView() {
        val stepList: MutableList<String> =
            ArrayList()
        stepList.add("Clinic")
        stepList.add("Doctor")
        stepList.add("Time")
        stepList.add("Confirmation")
        stepView!!.setSteps(stepList)
    }

    private fun setColorButton() {
        if (btn_next_step!!.isEnabled) {
            btn_next_step!!.setBackgroundResource(R.color.colorPrimary)
        } else {
            btn_next_step!!.setBackgroundResource(R.color.colorPrimaryDark)
        }
        if (btn_previous_step!!.isEnabled) {
            btn_previous_step!!.setBackgroundResource(R.color.colorPrimary)
        } else {
            btn_previous_step!!.setBackgroundResource(R.color.colorPrimary)
        }
    }

This's from my logcat.

java.lang.NoSuchMethodError: No static method metafactory(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodHandle;Ljava/lang/invoke/MethodType;)Ljava/lang/invoke/CallSite; in class Ljava/lang/invoke/LambdaMetafactory; or its super classes (declaration of 'java.lang.invoke.LambdaMetafactory' appears in /apex/com.android.runtime/javalib/core-oj.jar)
        at butterknife.Unbinder.<clinit>(Unbinder.java:9)
        at butterknife.ButterKnife.bind(ButterKnife.java:165)
        at butterknife.ButterKnife.bind(ButterKnife.java:99)
        at npa.sit.cpoint.BookingActivity.onCreate(BookingActivity.kt:28)
        at android.app.Activity.performCreate(Activity.java:7802)
        at android.app.Activity.performCreate(Activity.java:7791)
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1299)
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3245)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3409)
        at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:83)
        at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
        at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2016)
        at android.os.Handler.dispatchMessage(Handler.java:107)
        at android.os.Looper.loop(Looper.java:214)
        at android.app.ActivityThread.main(ActivityThread.java:7356)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:930)