diff --git a/admin/app/translations.js b/admin/app/translations.js
index 11fb9c0b..1f6497fb 100644
--- a/admin/app/translations.js
+++ b/admin/app/translations.js
@@ -834,6 +834,7 @@ function config($translateProvider) {
                 INVALID_VIRTUAL_METER_NAME: 'Invalid Virtual Meter Name',
                 INVALID_WEB_MESSAGE_ID: 'Invalid Web Message ID',
                 INVALID_WECHAT_MESSAGE_ID: 'Invalid Wechat Message ID',
+                KNOWLEDGE_FILE_CANNOT_BE_REMOVED_FROM_DISK: 'Knowledge File Cannot be Removed from Disk',
                 KNOWLEDGE_FILE_NOT_FOUND: 'Knowledge File Not Found',
                 MASTER_METER_DOES_NOT_BELONG_TO_SAME_ENERGY_CATEGORY: 'Master Meter Does Not Belong To Same Energy Category',
                 MASTER_METER_NOT_FOUND: 'Master Meter Not Found',
@@ -1821,6 +1822,7 @@ function config($translateProvider) {
                 INVALID_VIRTUAL_METER_NAME: 'Invalid Virtual Meter Name',
                 INVALID_WEB_MESSAGE_ID: 'Invalid Web Message ID',
                 INVALID_WECHAT_MESSAGE_ID: 'Invalid Wechat Message ID',
+                KNOWLEDGE_FILE_CANNOT_BE_REMOVED_FROM_DISK: 'Knowledge File Cannot be Removed from Disk',
                 KNOWLEDGE_FILE_NOT_FOUND: 'Knowledge File Not Found',
                 MASTER_METER_DOES_NOT_BELONG_TO_SAME_ENERGY_CATEGORY: 'Master Meter Does Not Belong To Same Energy Category',
                 MASTER_METER_NOT_FOUND: 'Master Meter Not Found',
@@ -2807,6 +2809,7 @@ function config($translateProvider) {
                 INVALID_VIRTUAL_METER_NAME: 'Invalid Virtual Meter Name',
                 INVALID_WEB_MESSAGE_ID: 'Invalid Web Message ID',
                 INVALID_WECHAT_MESSAGE_ID: 'Invalid Wechat Message ID',
+                KNOWLEDGE_FILE_CANNOT_BE_REMOVED_FROM_DISK: 'Knowledge File Cannot be Removed from Disk',
                 KNOWLEDGE_FILE_NOT_FOUND: 'Knowledge File Not Found',
                 MASTER_METER_DOES_NOT_BELONG_TO_SAME_ENERGY_CATEGORY: 'Master Meter Does Not Belong To Same Energy Category',
                 MASTER_METER_NOT_FOUND: 'Master Meter Not Found',
diff --git a/myems-api/core/knowledgefile.py b/myems-api/core/knowledgefile.py
index 43946971..75154c46 100644
--- a/myems-api/core/knowledgefile.py
+++ b/myems-api/core/knowledgefile.py
@@ -257,12 +257,11 @@ class KnowledgeFileItem:
             file_uuid = row[0]
             # Define file_path
             file_path = os.path.join(config.upload_path, file_uuid)
-
             # remove the file from disk
             os.remove(file_path)
         except Exception as ex:
             raise falcon.HTTPError(falcon.HTTP_400, title='API.ERROR',
-                                   description='API.KNOWLEDGE_FILE_NOT_FOUND')
+                                   description='API.KNOWLEDGE_FILE_CANNOT_BE_REMOVED_FROM_DISK')
 
         cursor.execute(" DELETE FROM tbl_knowledge_files WHERE id = %s ", (id_,))
         cnx.commit()
diff --git a/web/README.md b/web/README.md
index ad00db13..18b79969 100644
--- a/web/README.md
+++ b/web/README.md
@@ -42,17 +42,26 @@ npx -v
 ```
 
 *   Open the “myems/web” directory with your cmd or terminal
-*   Run 'sudo npm i --unsafe-perm=true --allow-root'
-  
+```bash
+cd myems/web
+sudo npm i --unsafe-perm=true --allow-root
+```
+
 This command will download all the necessary dependencies for falcon in the node_modules directory.
 *   If you modified any scss files, then you need to compile SCSS
-Run 'sudo npm run scss' command in your project directory to compile scss. 
+Run below command in your project directory to compile scss.
+```bash
+sudo npm run scss
+``` 
 *   Run 'sudo npm start'
 A local web server will start at http://localhost:3000.
 We are using webpack and webpack-serve to automatically detect file changes. So, if you edit and save a file, your browser will automatically refresh and preview the change.
 
 ## Creating a Production Build
-*   Run 'sudo npm run build' command in your project directory to make the Production build.
+*   Run below command in your project directory to make the Production build.
+```bash
+sudo npm run build
+```
 
 This will create an optimized production build by compililing, merging and minifying all the source files as necessary and put them in the build/ folder.
 
diff --git a/web/src/i18n.js b/web/src/i18n.js
index f10b33f6..9bf58b21 100644
--- a/web/src/i18n.js
+++ b/web/src/i18n.js
@@ -597,6 +597,7 @@ const resources = {
       "API.INVALID_VIRTUAL_METER_NAME": "Invalid virtual meter name",
       "API.INVALID_WEB_MESSAGE_ID": "Invalid web message id",
       "API.INVALID_WECHAT_MESSAGE_ID": "Invalid wechat message id",
+      "API.KNOWLEDGE_FILE_CANNOT_BE_REMOVED_FROM_DISK": "Knowledge File Cannot be Removed from Disk",
       "API.KNOWLEDGE_FILE_NOT_FOUND": "Knowledge file not found",
       "API.MASTER_METER_DOES_NOT_BELONG_TO_SAME_ENERGY_CATEGORY": "Master meter does not belong to same energy category",
       "API.MASTER_METER_NOT_FOUND": "Master meter not found",
@@ -1346,6 +1347,7 @@ const resources = {
       "API.INVALID_VIRTUAL_METER_NAME": "",
       "API.INVALID_WEB_MESSAGE_ID": "",
       "API.INVALID_WECHAT_MESSAGE_ID": "",
+      "API.KNOWLEDGE_FILE_CANNOT_BE_REMOVED_FROM_DISK": "",
       "API.KNOWLEDGE_FILE_NOT_FOUND": "",
       "API.MASTER_METER_DOES_NOT_BELONG_TO_SAME_ENERGY_CATEGORY": "",
       "API.MASTER_METER_NOT_FOUND": "",
@@ -2095,6 +2097,7 @@ const resources = {
       "API.INVALID_VIRTUAL_METER_NAME": "",
       "API.INVALID_WEB_MESSAGE_ID": "",
       "API.INVALID_WECHAT_MESSAGE_ID": "",
+      "API.KNOWLEDGE_FILE_CANNOT_BE_REMOVED_FROM_DISK": "",
       "API.KNOWLEDGE_FILE_NOT_FOUND": "",
       "API.MASTER_METER_DOES_NOT_BELONG_TO_SAME_ENERGY_CATEGORY": "",
       "API.MASTER_METER_NOT_FOUND": "",