diff --git a/example/dapp/lib/main.dart b/example/dapp/lib/main.dart
index 3d3a7b1e..68c68cc3 100644
--- a/example/dapp/lib/main.dart
+++ b/example/dapp/lib/main.dart
@@ -61,7 +61,7 @@ class _MyHomePageState extends State<MyHomePage> {
     debugPrint('Project ID: ${DartDefines.projectId}');
     _web3App = await Web3App.createInstance(
       projectId: DartDefines.projectId,
-      logLevel: LogLevel.info,
+      logLevel: LogLevel.debug,
       metadata: const PairingMetadata(
         name: 'Sample dApp Flutter',
         description: 'WalletConnect\'s sample dapp with Flutter',
diff --git a/example/wallet/lib/dependencies/web3wallet_service.dart b/example/wallet/lib/dependencies/web3wallet_service.dart
index 2a7c897a..9047c620 100644
--- a/example/wallet/lib/dependencies/web3wallet_service.dart
+++ b/example/wallet/lib/dependencies/web3wallet_service.dart
@@ -40,7 +40,7 @@ class Web3WalletService extends IWeb3WalletService {
     _web3Wallet = Web3Wallet(
       core: Core(
         projectId: DartDefines.projectId,
-        logLevel: LogLevel.error,
+        logLevel: LogLevel.debug,
       ),
       metadata: const PairingMetadata(
         name: 'Sample Wallet Flutter',
diff --git a/lib/apis/auth_api/auth_engine.dart b/lib/apis/auth_api/auth_engine.dart
index c9eba970..0d4cad38 100644
--- a/lib/apis/auth_api/auth_engine.dart
+++ b/lib/apis/auth_api/auth_engine.dart
@@ -431,7 +431,7 @@ class AuthEngine implements IAuthEngine {
         payload.id,
         topic,
         payload.method,
-        JsonRpcError.invalidParams(
+        JsonRpcError.invalidRequest(
           err.message,
         ),
       );
diff --git a/lib/apis/core/core.dart b/lib/apis/core/core.dart
index 13766119..7b9dab92 100644
--- a/lib/apis/core/core.dart
+++ b/lib/apis/core/core.dart
@@ -1,3 +1,4 @@
+import 'package:flutter/foundation.dart';
 import 'package:logger/logger.dart';
 import 'package:walletconnect_flutter_v2/apis/core/crypto/crypto.dart';
 import 'package:walletconnect_flutter_v2/apis/core/crypto/i_crypto.dart';
@@ -75,6 +76,8 @@ class Core implements ICore {
   @override
   late IStore<Map<String, dynamic>> storage;
 
+  void _logListener(LogEvent event) => debugPrint('${event.message}');
+
   Core({
     required this.projectId,
     this.relayUrl = WalletConnectConstants.DEFAULT_RELAY_URL,
@@ -88,6 +91,12 @@ class Core implements ICore {
       level: logLevel.toLevel(),
       printer: PrettyPrinter(),
     );
+    try {
+      Logger.removeLogListener(_logListener);
+    } catch (_) {}
+    if (kDebugMode && logLevel == LogLevel.debug) {
+      Logger.addLogListener(_logListener);
+    }
     heartbeat = HeartBeat();
     storage = SharedPrefsStores(
       memoryStore: memoryStore,
diff --git a/lib/apis/core/relay_client/json_rpc_2/error_code.dart b/lib/apis/core/relay_client/json_rpc_2/error_code.dart
index 14e0543d..a3447d5e 100644
--- a/lib/apis/core/relay_client/json_rpc_2/error_code.dart
+++ b/lib/apis/core/relay_client/json_rpc_2/error_code.dart
@@ -12,7 +12,7 @@
 ///
 /// [spec]: http://www.jsonrpc.org/specification#error_object
 /// An error code indicating that invalid JSON was received by the server.
-const PARSE_ERROR = -32700;
+// const PARSE_ERROR = -32700;
 
 /// An error code indicating that the request JSON was invalid according to the
 /// JSON-RPC 2.0 spec.
@@ -24,7 +24,7 @@ const METHOD_NOT_FOUND = -32601;
 
 /// An error code indicating that the request parameters are invalid for the
 /// requested method.
-const INVALID_PARAMS = -32602;
+// const INVALID_PARAMS = -32602;
 
 /// An internal JSON-RPC error.
 const INTERNAL_ERROR = -32603;
@@ -41,14 +41,14 @@ const SERVER_ERROR = -32000;
 /// If [errorCode] isn't defined in the JSON-RPC 2.0 spec, returns null.
 String? name(int errorCode) {
   switch (errorCode) {
-    case PARSE_ERROR:
-      return 'parse error';
+    // case PARSE_ERROR:
+    //   return 'parse error';
     case INVALID_REQUEST:
       return 'invalid request';
     case METHOD_NOT_FOUND:
       return 'method not found';
-    case INVALID_PARAMS:
-      return 'invalid parameters';
+    // case INVALID_PARAMS:
+    //   return 'invalid parameters';
     case INTERNAL_ERROR:
       return 'internal error';
     default:
diff --git a/lib/apis/core/relay_client/json_rpc_2/src/exception.dart b/lib/apis/core/relay_client/json_rpc_2/src/exception.dart
index ad39ff23..952d214e 100644
--- a/lib/apis/core/relay_client/json_rpc_2/src/exception.dart
+++ b/lib/apis/core/relay_client/json_rpc_2/src/exception.dart
@@ -39,7 +39,7 @@ class RpcException implements Exception {
   ///
   /// Methods can use this to reject requests with invalid parameters.
   RpcException.invalidParams(String message)
-      : this(error_code.INVALID_PARAMS, message);
+      : this(error_code.INVALID_REQUEST, message);
 
   /// Converts this exception into a JSON-serializable object that's a valid
   /// JSON-RPC 2.0 error response.
diff --git a/lib/apis/core/relay_client/json_rpc_2/src/utils.dart b/lib/apis/core/relay_client/json_rpc_2/src/utils.dart
index 305945c4..207d8972 100644
--- a/lib/apis/core/relay_client/json_rpc_2/src/utils.dart
+++ b/lib/apis/core/relay_client/json_rpc_2/src/utils.dart
@@ -61,8 +61,8 @@ class _RespondToFormatExceptionsTransformer
     return channel.changeStream((stream) {
       return stream.handleError((dynamic error) {
         final formatException = error as FormatException;
-        var exception = RpcException(
-            error_code.PARSE_ERROR, 'Invalid JSON: ${formatException.message}');
+        var exception = RpcException(error_code.INVALID_REQUEST,
+            'Invalid JSON: ${formatException.message}');
         channel.sink.add(exception.serialize(formatException.source));
       }, test: (error) => error is FormatException);
     });
diff --git a/lib/apis/models/json_rpc_error.dart b/lib/apis/models/json_rpc_error.dart
index af067cf0..3ed7e130 100644
--- a/lib/apis/models/json_rpc_error.dart
+++ b/lib/apis/models/json_rpc_error.dart
@@ -13,12 +13,12 @@ class JsonRpcError with _$JsonRpcError {
 
   factory JsonRpcError.serverError(String message) =>
       JsonRpcError(code: -32000, message: message);
-  factory JsonRpcError.invalidParams(String message) =>
-      JsonRpcError(code: -32602, message: message);
+//   factory JsonRpcError.invalidParams(String message) =>
+//       JsonRpcError(code: -32602, message: message);
   factory JsonRpcError.invalidRequest(String message) =>
       JsonRpcError(code: -32600, message: message);
-  factory JsonRpcError.parseError(String message) =>
-      JsonRpcError(code: -32700, message: message);
+//   factory JsonRpcError.parseError(String message) =>
+//       JsonRpcError(code: -32700, message: message);
   factory JsonRpcError.methodNotFound(String message) =>
       JsonRpcError(code: -32601, message: message);
 
diff --git a/lib/apis/sign_api/sign_engine.dart b/lib/apis/sign_api/sign_engine.dart
index 417e2784..c4994d5f 100644
--- a/lib/apis/sign_api/sign_engine.dart
+++ b/lib/apis/sign_api/sign_engine.dart
@@ -268,7 +268,7 @@ class SignEngine implements ISignEngine {
     );
     // print('approve session topic: $sessionTopic');
     final relay = Relay(
-      relayProtocol ?? 'irn',
+      relayProtocol ?? WalletConnectConstants.RELAYER_DEFAULT_PROTOCOL,
     );
 
     // Respond to the proposal
@@ -1101,7 +1101,7 @@ class SignEngine implements ISignEngine {
         payload.id,
         topic,
         payload.method,
-        JsonRpcError.invalidParams(
+        JsonRpcError.invalidRequest(
           err.message,
         ),
       );
@@ -1139,7 +1139,7 @@ class SignEngine implements ISignEngine {
         payload.id,
         topic,
         payload.method,
-        JsonRpcError.invalidParams(
+        JsonRpcError.invalidRequest(
           err.message,
         ),
       );
@@ -1176,7 +1176,7 @@ class SignEngine implements ISignEngine {
         payload.id,
         topic,
         payload.method,
-        JsonRpcError.invalidParams(
+        JsonRpcError.invalidRequest(
           err.message,
         ),
       );
@@ -1207,7 +1207,7 @@ class SignEngine implements ISignEngine {
         payload.id,
         topic,
         payload.method,
-        JsonRpcError.invalidParams(
+        JsonRpcError.invalidRequest(
           err.message,
         ),
       );
@@ -1233,7 +1233,7 @@ class SignEngine implements ISignEngine {
         payload.id,
         topic,
         payload.method,
-        JsonRpcError.invalidParams(
+        JsonRpcError.invalidRequest(
           err.message,
         ),
       );
@@ -1308,7 +1308,7 @@ class SignEngine implements ISignEngine {
               payload.id,
               topic,
               payload.method,
-              JsonRpcError.invalidParams(
+              JsonRpcError.invalidRequest(
                 err.toString(),
               ),
             );
@@ -1337,7 +1337,7 @@ class SignEngine implements ISignEngine {
         payload.id,
         topic,
         payload.method,
-        JsonRpcError.invalidParams(
+        JsonRpcError.invalidRequest(
           err.message,
         ),
       );
@@ -1375,7 +1375,7 @@ class SignEngine implements ISignEngine {
               payload.id,
               topic,
               payload.method,
-              JsonRpcError.invalidParams(
+              JsonRpcError.invalidRequest(
                 err.toString(),
               ),
             );
@@ -1413,7 +1413,7 @@ class SignEngine implements ISignEngine {
         payload.id,
         topic,
         payload.method,
-        JsonRpcError.invalidParams(
+        JsonRpcError.invalidRequest(
           err.message,
         ),
       );
diff --git a/test/sign_api/tests/sign_request_and_handler.dart b/test/sign_api/tests/sign_request_and_handler.dart
index 47ddf5ed..c98d7de0 100644
--- a/test/sign_api/tests/sign_request_and_handler.dart
+++ b/test/sign_api/tests/sign_request_and_handler.dart
@@ -214,7 +214,7 @@ void signRequestAndHandler({
       } on JsonRpcError catch (e) {
         expect(
           e.code,
-          JsonRpcError.invalidParams('swag').code,
+          JsonRpcError.invalidRequest('swag').code,
         );
       }
 
@@ -276,7 +276,7 @@ void signRequestAndHandler({
             topic: request.topic,
             response: JsonRpcResponse(
               id: request.id,
-              error: JsonRpcError.invalidParams(request.params.toString()),
+              error: JsonRpcError.invalidRequest(request.params.toString()),
             ),
           );
         }
@@ -308,7 +308,7 @@ void signRequestAndHandler({
         // print(e);
         expect(
           e.code,
-          JsonRpcError.invalidParams('swag').code,
+          JsonRpcError.invalidRequest('swag').code,
         );
         expect(e.message!.contains(TEST_MESSAGE_1.toString()), true);
       }
@@ -328,7 +328,7 @@ void signRequestAndHandler({
           topic: session.topic,
           response: JsonRpcResponse<String>(
             id: session.id,
-            error: JsonRpcError.invalidParams('invalid'),
+            error: JsonRpcError.invalidRequest('invalid'),
           ),
         );