java.lang.NullPointerException: Attempt to invoke interface method 'void com.android.okhttp.internal.http.HttpStream.writeRequestHeaders(com.android.okhttp.Request)' on a null object reference

[Jayden-ais]

I am using com.heartlandpaymentsystems:globalpayments-android-sdk:1.1.35 this library but this is not working i am getting below error

java.lang.NullPointerException: Attempt to invoke interface method 'void com.android.okhttp.internal.http.HttpStream.writeRequestHeaders(com.android.okhttp.Request)' on a null object reference
12:38:41.835  W  	at com.android.okhttp.internal.http.HttpEngine.readResponse(HttpEngine.java:606)
12:38:41.835  W  	at com.android.okhttp.internal.huc.HttpURLConnectionImpl.execute(HttpURLConnectionImpl.java:475)
12:38:41.835  W  	at com.android.okhttp.internal.huc.HttpURLConnectionImpl.getResponse(HttpURLConnectionImpl.java:411)
12:38:41.835  W  	at com.android.okhttp.internal.huc.HttpURLConnectionImpl.getResponseCode(HttpURLConnectionImpl.java:542)
12:38:41.835  W  	at com.android.okhttp.internal.huc.DelegatingHttpsURLConnection.getResponseCode(DelegatingHttpsURLConnection.java:106)
12:38:41.835  W  	at com.android.okhttp.internal.huc.HttpsURLConnectionImpl.getResponseCode(HttpsURLConnectionImpl.java:30)
12:38:41.836  W  	at com.global.api.gateways.Gateway.sendRequest(Gateway.java:172)
12:38:41.836  W  	at com.global.api.gateways.RestGateway.doTransaction(RestGateway.java:20)
12:38:41.836  W  	at com.global.api.gateways.GpApiConnector.getAccessToken(GpApiConnector.java:184)
12:38:41.836  W  	at com.global.api.gateways.GpApiConnector.signIn(GpApiConnector.java:123)
12:38:41.836  W  	at com.global.api.gateways.GpApiConnector.processAuthorization(GpApiConnector.java:256)
12:38:41.836  W  	at com.global.api.builders.AuthorizationBuilder.execute(AuthorizationBuilder.java:947)
12:38:41.836  W  	at com.global.api.builders.AuthorizationBuilder.execute(AuthorizationBuilder.java:28)
12:38:41.836  W  	at com.global.api.builders.BaseBuilder.execute(BaseBuilder.java:22)
12:38:41.836  W  	at com.familyentertainment.app.ui.fragments.CheckOutFragment.initView(CheckOutFragment.java:75)
12:38:41.836  W  	at com.familyentertainment.app.ui.fragments.CheckOutFragment_.onViewChanged(CheckOutFragment_.java:98)
12:38:41.836  W  	at org.androidannotations.api.view.OnViewChangedNotifier.notifyViewChanged(OnViewChangedNotifier.java:41)
12:38:41.836  W  	at com.familyentertainment.app.ui.fragments.CheckOutFragment_.onViewCreated(CheckOutFragment_.java:67)
12:38:41.836  W  	at androidx.fragment.app.Fragment.performViewCreated(Fragment.java:3148)
12:38:41.837  W  	at androidx.fragment.app.FragmentStateManager.createView(FragmentStateManager.java:600)
12:38:41.837  W  	at androidx.fragment.app.FragmentStateManager.moveToExpectedState(FragmentStateManager.java:278)
12:38:41.837  W  	at androidx.fragment.app.FragmentManager.executeOpsTogether(FragmentManager.java:2103)
12:38:41.837  W  	at androidx.fragment.app.FragmentManager.removeRedundantOperationsAndExecute(FragmentManager.java:1998)
12:38:41.837  W  	at androidx.fragment.app.FragmentManager.execPendingActions(FragmentManager.java:1941)
12:38:41.837  W  	at androidx.fragment.app.FragmentManager$5.run(FragmentManager.java:661)
12:38:41.837  W  	at android.os.Handler.handleCallback(Handler.java:938)
12:38:41.837  W  	at android.os.Handler.dispatchMessage(Handler.java:99)
12:38:41.837  W  	at android.os.Looper.loopOnce(Looper.java:210)
12:38:41.837  W  	at android.os.Looper.loop(Looper.java:299)
12:38:41.837  W  	at android.app.ActivityThread.main(ActivityThread.java:8302)
12:38:41.837  W  	at java.lang.reflect.Method.invoke(Native Method)
12:38:41.837  W  	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:556)
12:38:41.837  W  	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1037)

here is my card.charge request data

[Add Configuration] - default
12:38:41.831  I  ================================================================================
12:38:41.831  I  Timestamp:      2024-06-04 12:38:41.831
12:38:41.831  I  Endpoint:       POST https://apis.sandbox.globalpay.com/ucp/accesstoken
12:38:41.831  I  Proxy:          none
12:38:41.831  I  
12:38:41.831  I  Headers:        
12:38:41.831  I  Accept: application/json
12:38:41.831  I  Accept-Encoding: gzip
12:38:41.831  I  Content-Type: application/json; charset=UTF-8
12:38:41.831  I  X-GP-Version: 2021-03-22
12:38:41.831  I  
12:38:41.831  I  Request Body: 
12:38:41.831  I  {
12:38:41.831  I    "grant_type": "client_credentials",
12:38:41.831  I    "secret": "dd219014281a2d92b680010c7747c0a0b8786e9c091513ffd6effb2be88b3171f3759fdbdc46e0a253699ae03aa0885f44873d7dfaaea529d3b27db562f053a4",
12:38:41.831  I    "app_id": "Your application ID",
12:38:41.831  I    "nonce": "2024-06-04T12:38:41.745Z"
12:38:41.831  I  }
12:38:41.834  I  --------------------------------------------------------------------------------
12:38:41.834  I  Timestamp:     2024-06-04 12:38:41.834
12:38:41.834  I  Exception:
12:38:41.834  I  null