diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4720259f..60316b14 100755
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -39,6 +39,7 @@
 - Merged "Android fix leaking MethodChannel through anonymous class" [#1201](https://github.com/pichillilorenzo/flutter_inappwebview/pull/1201) (thanks to [emakar](https://github.com/emakar))
 - Merged "Fix RangeError: Maximum call stack size exceeded" [#1208](https://github.com/pichillilorenzo/flutter_inappwebview/pull/1208) (thanks to [liasica](https://github.com/liasica))
 - Merged "fix: try to open with Chrome if default browser app does not support custom tabs" [#1233](https://github.com/pichillilorenzo/flutter_inappwebview/pull/1233) (thanks to [addie9000](https://github.com/addie9000))
+- Merged "fix: Prevent Android java.lang.NullPointerException in InAppWebViewCl…" [#1237](https://github.com/pichillilorenzo/flutter_inappwebview/pull/1237) (thanks to [kamilpowalowski](https://github.com/kamilpowalowski))
 
 ## 5.4.4+3
 
diff --git a/android/src/main/java/com/pichillilorenzo/flutter_inappwebview/webview/in_app_webview/InAppWebViewClient.java b/android/src/main/java/com/pichillilorenzo/flutter_inappwebview/webview/in_app_webview/InAppWebViewClient.java
index a2eca550..c7bd6bd2 100755
--- a/android/src/main/java/com/pichillilorenzo/flutter_inappwebview/webview/in_app_webview/InAppWebViewClient.java
+++ b/android/src/main/java/com/pichillilorenzo/flutter_inappwebview/webview/in_app_webview/InAppWebViewClient.java
@@ -343,22 +343,20 @@ public class InAppWebViewClient extends WebViewClient {
 
   @Override
   public void onReceivedHttpAuthRequest(final WebView view, final HttpAuthHandler handler, final String host, final String realm) {
-    URI uri;
-    try {
-      uri = new URI(view.getUrl());
-    } catch (URISyntaxException e) {
-      e.printStackTrace();
+    final String url = view.getUrl();
+    String protocol = "https";
+    int port = 0;
 
-      credentialsProposed = null;
-      previousAuthRequestFailureCount = 0;
-
-      handler.cancel();
-      return;
+    if (url != null) {
+      try {
+        URI uri = new URI(url);
+        protocol = uri.getScheme();
+        port = uri.getPort();
+      } catch (URISyntaxException e) {
+        e.printStackTrace();
+      }
     }
 
-    final String protocol = uri.getScheme();
-    final int port = uri.getPort();
-
     previousAuthRequestFailureCount++;
 
     if (credentialsProposed == null)
@@ -373,6 +371,8 @@ public class InAppWebViewClient extends WebViewClient {
     HttpAuthenticationChallenge challenge = new HttpAuthenticationChallenge(protectionSpace, previousAuthRequestFailureCount, credentialProposed);
 
     final InAppWebView webView = (InAppWebView) view;
+    final String finalProtocol = protocol;
+    final int finalPort = port;
     final WebViewChannelDelegate.ReceivedHttpAuthRequestCallback callback = new WebViewChannelDelegate.ReceivedHttpAuthRequestCallback() {
       @Override
       public boolean nonNullSuccess(@NonNull HttpAuthResponse response) {
@@ -385,7 +385,7 @@ public class InAppWebViewClient extends WebViewClient {
               boolean permanentPersistence = response.isPermanentPersistence();
               if (permanentPersistence) {
                 CredentialDatabase.getInstance(view.getContext())
-                        .setHttpAuthCredential(host, protocol, realm, port, username, password);
+                        .setHttpAuthCredential(host, finalProtocol, realm, finalPort, username, password);
               }
               handler.proceed(username, password);
               break;
@@ -433,19 +433,20 @@ public class InAppWebViewClient extends WebViewClient {
 
   @Override
   public void onReceivedSslError(final WebView view, final SslErrorHandler handler, final SslError sslError) {
-    URI uri;
+    final String url = sslError.getUrl();
+    String host = "";
+    String protocol = "https";
+    int port = 0;
+
     try {
-      uri = new URI(sslError.getUrl());
+      URI uri = new URI(url);
+      host = uri.getHost();
+      protocol = uri.getScheme();
+      port = uri.getPort();
     } catch (URISyntaxException e) {
       e.printStackTrace();
-      handler.cancel();
-      return;
     }
 
-    final String host = uri.getHost();
-    final String protocol = uri.getScheme();
-    final int port = uri.getPort();
-
     URLProtectionSpace protectionSpace = new URLProtectionSpace(host, protocol, null, port, sslError.getCertificate(), sslError);
     ServerTrustChallenge challenge = new ServerTrustChallenge(protectionSpace);
 
@@ -492,19 +493,20 @@ public class InAppWebViewClient extends WebViewClient {
   @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
   @Override
   public void onReceivedClientCertRequest(final WebView view, final ClientCertRequest request) {
-    URI uri;
-    try {
-      uri = new URI(view.getUrl());
-    } catch (URISyntaxException e) {
-      e.printStackTrace();
-      request.cancel();
-      return;
-    }
-
+    final String url = view.getUrl();
     final String host = request.getHost();
-    final String protocol = uri.getScheme();
+    String protocol = "https";
     final int port = request.getPort();
 
+    if (url != null) {
+      try {
+        URI uri = new URI(url);
+        protocol = uri.getScheme();
+      } catch (URISyntaxException e) {
+        e.printStackTrace();
+      }
+    }
+
     URLProtectionSpace protectionSpace = new URLProtectionSpace(host, protocol, null, port, view.getCertificate(), null);
     ClientCertChallenge challenge = new ClientCertChallenge(protectionSpace, request.getPrincipals(), request.getKeyTypes());