diff --git a/src/error/messages/index.ts b/src/error/messages/index.ts
index ca50746f..4a2f54cf 100644
--- a/src/error/messages/index.ts
+++ b/src/error/messages/index.ts
@@ -24,12 +24,12 @@ const errorMessages = {
     INVALID_CREDENTIALS_FILE_PATH: `${errorPrefix} Initialization failed. Invalid skyflow credentials. Expected file path to exists.`,
     INVALID_KEY: `${errorPrefix} Initialization failed. Invalid skyflow credentials. Specify a valid api key.`,
     INVALID_PARSED_CREDENTIALS_STRING: `${errorPrefix} Initialization failed. Invalid skyflow credentials. Specify a valid credentials string.`,
-    INVALID_BEARER_TOKEN: `${errorPrefix} Initialization failed. Invalid skyflow credentials. Specify a valid token.`,
+    INVALID_BEARER_TOKEN: `${errorPrefix} Initialization failed. Invalid skyflow credentials. Bearer token is invalid or expired. Specify a valid token.`,
 
     INVALID_FILE_PATH_WITH_ID: `${errorPrefix} Initialization failed. Invalid credentials. Expected file path to exists for %s1 with %s2 %s3.`,
     INVALID_KEY_WITH_ID: `${errorPrefix} Initialization failed. Invalid credentials. Specify a valid api key for %s1 with %s2 %s3.`,
     INVALID_PARSED_CREDENTIALS_STRING_WITH_ID: `${errorPrefix} Initialization failed. Invalid credentials. Specify a valid credentials string for %s1 with %s2 %s3.`,
-    INVALID_BEARER_TOKEN_WITH_ID: `${errorPrefix} Initialization failed. Invalid credentials. Specify a valid token for %s1 with %s2 %s3.`,
+    INVALID_BEARER_TOKEN_WITH_ID: `${errorPrefix} Initialization failed. Invalid credentials. Bearer token is invalid or expired. Specify a valid token for %s1 with %s2 %s3.`,
 
     EMPTY_CONNECTION_ID_VALIDATION: `${errorPrefix} Validation error. Invalid connection ID. Specify a valid connection Id.`,
     EMPTY_CONNECTION_ID: `${errorPrefix} Initialization failed. Invalid connection ID. Specify a valid connection Id.`,
diff --git a/src/utils/index.ts b/src/utils/index.ts
index 856359e3..f00abcee 100644
--- a/src/utils/index.ts
+++ b/src/utils/index.ts
@@ -365,9 +365,9 @@ export function fillUrlWithPathAndQueryParams(url: string,
     let filledUrl = url;
     if (pathParams) {
         Object.entries(pathParams).forEach(([key, value]) => {
-            filledUrl = url.replace(`{${key}}`, String(value));
+            filledUrl = filledUrl.replace(`{${key}}`, String(value));
         });
-    }
+        }
     if (queryParams) {
         filledUrl += '?';
         Object.entries(queryParams).forEach(([key, value]) => {
diff --git a/src/vault/controller/connections/index.ts b/src/vault/controller/connections/index.ts
index c18abe22..57edeb31 100644
--- a/src/vault/controller/connections/index.ts
+++ b/src/vault/controller/connections/index.ts
@@ -61,25 +61,38 @@ class ConnectionController {
                         headers: { ...invokeRequest.headers, ...sdkHeaders },
                     })
                         .then(async (response) => {
-                            if(!response.ok){
-                                const errorBody = await response.json().catch(() => null);
+                            if (!response.ok) {
+                                let errorBody:unknown = null ;
 
-                                const error = {
+                                try {
+                                    errorBody = await response.json();
+                                } catch {
+                                    try {
+                                        const text = await response.text();
+                                        errorBody = text ? { message: text } : null;
+                                    } catch {
+                                        response.body?.cancel().catch(() => { });
+                                    }
+                                }
+
+                                throw {
                                     body: errorBody,
                                     statusCode: response.status,
                                     message: response.statusText,
                                     headers: response.headers
                                 };
-                                throw error;
                             }
+
                             const headers = response.headers;
-                            return response.json().then((body) => ({ headers, body }));
+                            const body = await response.json();
+                            return { headers, body };
                         })
+
                         .then(({headers, body}) => {
                             printLog(logs.infoLogs.INVOKE_CONNECTION_REQUEST_RESOLVED, MessageType.LOG, this.logLevel);
                             const requestId = headers?.get(REQUEST_ID_KEY) || '';
                             const invokeConnectionResponse = new InvokeConnectionResponse({
-                                data: body,
+                                data:body,
                                 metadata: { requestId },
                                 errors: null
                             });
diff --git a/test/vault/utils/utils.test.js b/test/vault/utils/utils.test.js
index ffea9c3d..625de549 100644
--- a/test/vault/utils/utils.test.js
+++ b/test/vault/utils/utils.test.js
@@ -162,7 +162,7 @@ describe('fillUrlWithPathAndQueryParams', () => {
         const url = '/api/resource/{category}/{id}';
         const pathParams = { category: 'books', id: '456' };
         const result = fillUrlWithPathAndQueryParams(url, pathParams);
-        expect(result).toBe('/api/resource/{category}/456');
+        expect(result).toBe('/api/resource/books/456');
     });
 
     test('should handle query parameters with special characters', () => {