diff --git a/admin/app/controllers/settings/meter/offline-meter-file.controller.js b/admin/app/controllers/settings/meter/offline-meter-file.controller.js
index 71bd0b9e..3adbf577 100644
--- a/admin/app/controllers/settings/meter/offline-meter-file.controller.js
+++ b/admin/app/controllers/settings/meter/offline-meter-file.controller.js
@@ -27,22 +27,22 @@ app.controller('OfflineMeterFileController', function($scope, $common,  $cookies
 		},
 		'success': function(file, xhr) {
 			//console.log('File success to upload from dropzone', file, xhr);
-					var templateName = file.name;
+			var templateName = file.name;
 
-					var popType = 'TOASTER.SUCCESS';
-					var popTitle = $common.toaster.success_title;
-					var popBody = $common.toaster.success_add_body;
+			var popType = 'TOASTER.SUCCESS';
+			var popTitle = $common.toaster.success_title;
+			var popBody = $common.toaster.success_add_body;
 
-					popType = $translate.instant(popType);
-					popTitle = $translate.instant(popTitle);
-					popBody = $translate.instant(popBody,{template: templateName});
+			popType = $translate.instant(popType);
+			popTitle = $translate.instant(popTitle);
+			popBody = $translate.instant(popBody,{template: templateName});
 
-					toaster.pop({
-						type: popType,
-						title: popTitle,
-						body: popBody,
-						showCloseButton: true,
-					});
+			toaster.pop({
+				type: popType,
+				title: popTitle,
+				body: popBody,
+				showCloseButton: true,
+			});
 
 			// toaster.pop({
 			// 	type: 'success',
@@ -77,15 +77,15 @@ app.controller('OfflineMeterFileController', function($scope, $common,  $cookies
 
 	$scope.deleteOfflineMeterFile = function(offlinemeterfile) {
 		SweetAlert.swal({
-				title: $translate.instant($common.sweet.title),
-				text: $translate.instant($common.sweet.text),
-				type: "warning",
-				showCancelButton: true,
-				confirmButtonColor: "#DD6B55",
-				confirmButtonText: $translate.instant($common.sweet.confirmButtonText),
-				cancelButtonText: $translate.instant($common.sweet.cancelButtonText),
-				closeOnConfirm: true,
-				closeOnCancel: true
+			title: $translate.instant($common.sweet.title),
+			text: $translate.instant($common.sweet.text),
+			type: "warning",
+			showCancelButton: true,
+			confirmButtonColor: "#DD6B55",
+			confirmButtonText: $translate.instant($common.sweet.confirmButtonText),
+			cancelButtonText: $translate.instant($common.sweet.cancelButtonText),
+			closeOnConfirm: true,
+			closeOnCancel: true
 			},
 			function(isConfirm) {
 				if (isConfirm) {
diff --git a/myems-api/core/offlinemeterfile.py b/myems-api/core/offlinemeterfile.py
index 10d779a5..37de469b 100644
--- a/myems-api/core/offlinemeterfile.py
+++ b/myems-api/core/offlinemeterfile.py
@@ -208,8 +208,8 @@ class OfflineMeterFileItem:
             # remove the file from disk
             os.remove(file_path)
         except Exception as ex:
-            raise falcon.HTTPError(falcon.HTTP_400, title='API.ERROR',
-                                   description='API.OFFLINE_METER_FILE_NOT_FOUND')
+            # ignore exception and don't return API.OFFLINE_METER_FILE_NOT_FOUND error
+            pass
 
         # Note: the energy data imported from the deleted file will not be deleted
         cursor.execute(" DELETE FROM tbl_offline_meter_files WHERE id = %s ", (id_,))