diff --git a/CHANGELOG.md b/CHANGELOG.md
index ec229df..428fc13 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,6 @@
 # Change Log
+## [4.18.1](https://github.com/plivo/plivo-node/releases/tag/v4.18.1)(2021-06-25)
+-  Fixed the mms media upload functionality
 
 ## [4.18.0](https://github.com/plivo/plivo-node/releases/tag/v4.18.0)(2021-06-15)
 -  Added stir verification param as part of Get CDR and live call APIs
diff --git a/lib/resources/media.js b/lib/resources/media.js
index ad027a7..aa229ed 100644
--- a/lib/resources/media.js
+++ b/lib/resources/media.js
@@ -97,7 +97,7 @@ export class MediaInterface extends PlivoResourceInterface {
         params.file = files
 
         let client = this[clientKey];
-
+        params.multipart = true;
         return new Promise((resolve, reject) => {
             client('POST', action, params)
                 .then(response => {
diff --git a/lib/rest/axios.js b/lib/rest/axios.js
index 61f8cde..5316274 100644
--- a/lib/rest/axios.js
+++ b/lib/rest/axios.js
@@ -46,7 +46,14 @@ export function Axios(config) {
           if (key != 'file') {
             multipartParams.append(key, params[key]);
           } else {
-            multipartParams.append(key, require('fs').createReadStream(params[key]));
+            // In case files are in array
+            if (Array.isArray(params.file)) {
+              for (let index = 0; index < params.file.length; index++) {
+                multipartParams.append(key, require('fs').createReadStream(params.file[index]));
+              }
+            }else{
+              multipartParams.append(key, require('fs').createReadStream(params[key]));
+            }
           }
         }
 
@@ -87,6 +94,10 @@ export function Axios(config) {
           });
         })
         .catch(function (error) {
+          //client side exception like file not found case
+          if (error.response == undefined){
+            reject(error.stack );
+          }
           const exceptionClass = {
             400: Exceptions.InvalidRequestError,
             401: Exceptions.AuthenticationError,
diff --git a/package.json b/package.json
index a6ffb81..7c9db7e 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "plivo",
-  "version": "4.18.0",
+  "version": "4.18.1",
   "description": "A Node.js SDK to make voice calls and send SMS using Plivo and to generate Plivo XML",
   "homepage": "https://github.com/plivo/plivo-node",
   "files": [