UriCodec NPE

[tbienko]

java.lang.NullPointerException: Attempt to invoke virtual method 'int java.lang.String.length()' on a null object reference
libcore.net.UriCodec.encode UriCodec.java:132
java.net.URLEncoder.encode URLEncoder.java:57
pl.mobiltek.paymentsmobile.dotpay.utils.WebViewHelper$QueryString.encode WebViewHelper.java:161
pl.mobiltek.paymentsmobile.dotpay.utils.WebViewHelper$QueryString.add WebViewHelper.java:154
pl.mobiltek.paymentsmobile.dotpay.utils.WebViewHelper.getQueryString WebViewHelper.java:58
pl.mobiltek.paymentsmobile.dotpay.fragment.WebViewFragment.postRelaese WebViewFragment.java:133
pl.mobiltek.paymentsmobile.dotpay.fragment.WebViewFragment.postPaymentData WebViewFragment.java:128
pl.mobiltek.paymentsmobile.dotpay.fragment.WebViewFragment.onCreateView WebViewFragment.java:93
androidx.fragment.app.Fragment.performCreateView Fragment.java:2600
androidx.fragment.app.FragmentManagerImpl.moveToState FragmentManagerImpl.java:881
androidx.fragment.app.FragmentManagerImpl.moveFragmentToExpectedState FragmentManagerImpl.java:1238
androidx.fragment.app.FragmentManagerImpl.moveToState FragmentManagerImpl.java:1303
androidx.fragment.app.FragmentManagerImpl.dispatchStateChange FragmentManagerImpl.java:2659
androidx.fragment.app.FragmentManagerImpl.dispatchActivityCreated FragmentManagerImpl.java:2613
androidx.fragment.app.FragmentController.dispatchActivityCreated FragmentController.java:246
androidx.fragment.app.FragmentActivity.onStart FragmentActivity.java:542
androidx.appcompat.app.AppCompatActivity.onStart AppCompatActivity.java:201
pl.mobiltek.paymentsmobile.dotpay.activity.PaymentActivity.onStart PaymentActivity.java:109
android.app.Instrumentation.callActivityOnStart Instrumentation.java:1249

SDK version: 1.4.21