diff --git a/lib/core/app_data_manager.dart b/lib/core/app_data_manager.dart
index 93a1ea5..a29bf29 100644
--- a/lib/core/app_data_manager.dart
+++ b/lib/core/app_data_manager.dart
@@ -44,20 +44,19 @@ class AppDataManager {
     var c = Completer<String>();
     var number = 0;
     var shell = StringBuffer();
-    switch (this._scm) {
+    switch (_scm) {
       case SCMType.Svn:
         break;
       case SCMType.Git:
         shell.writeln('git rev-list --all HEAD --all --count');
-        var process =
-            await ProcessExecutor.start(shell, workspace: this._workspace);
+        var process = await ProcessExecutor.start(shell, workspace: _workspace);
         await process.process.exitCode;
         number = int.parse(process.stdoutArr.last);
         break;
     }
 
-    var version = this.numberToVersion(number);
-    print('#### Version: ' + version);
+    var version = numberToVersion(number);
+    print('#### Version: $version');
     c.complete(version);
     return c.future;
   }
@@ -97,7 +96,7 @@ class AppDataManager {
         await ProcessExecutor.start(shell, workspace: this._workspace);
     await process.process.exitCode;
     var hash = process.stdoutArr.last;
-    print('#### Git Hash: ' + hash);
+    print('#### Git Hash: $hash');
     c.complete(hash);
     return c.future;
   }
@@ -105,7 +104,7 @@ class AppDataManager {
   String getBuildTime() {
     var date = DateTime.now().toString();
     date = date.substring(0, date.lastIndexOf('.'));
-    print('#### Build Date: ' + date);
+    print('#### Build Date: $date');
     return date;
   }
 
diff --git a/lib/core/log.dart b/lib/core/log.dart
index 8a64b4d..bedab3d 100644
--- a/lib/core/log.dart
+++ b/lib/core/log.dart
@@ -116,6 +116,7 @@ class Log {
     if (message.type == 'request') {
       write();
     } else if (message.type == 'ready') {
+      path = message.message as String;
       appendString('Log path: ${message.message}');
     }
   }
diff --git a/lib/utils/slack/slack_data.dart b/lib/utils/slack/slack_data.dart
index c4f2521..db1c1de 100644
--- a/lib/utils/slack/slack_data.dart
+++ b/lib/utils/slack/slack_data.dart
@@ -182,14 +182,13 @@ class SlackConfirm {
 }
 
 // To-do: File upload test
-@JsonSerializable()
 class SlackFile {
   String? title;
   // ignore: non_constant_identifier_names
   String? initial_comment;
-  String? filePath;
   String? fileName;
   String? mimeType;
+  late File file;
 
   Future<MultipartRequest> setFileData(MultipartRequest form) async {
     // var bytes = await readFileByte(filePath!);
@@ -202,8 +201,7 @@ class SlackFile {
     form.fields['filetype'] =
         "auto"; //참조 - https://api.slack.com/types/file#file_types
     if (fileName != null && mimeType != null) {
-      form.files.add(MultipartFile.fromBytes(
-          'file', await File.fromUri(Uri.parse(filePath!)).readAsBytes(),
+      form.files.add(await MultipartFile.fromPath('file', file.path,
           contentType: MediaType(HttpHeaders.contentTypeHeader, mimeType!)));
     }
     var c = Completer<MultipartRequest>();
diff --git a/lib/utils/slack/slack_data.g.dart b/lib/utils/slack/slack_data.g.dart
index 5a02a94..e003b61 100644
--- a/lib/utils/slack/slack_data.g.dart
+++ b/lib/utils/slack/slack_data.g.dart
@@ -182,18 +182,3 @@ Map<String, dynamic> _$SlackConfirmToJson(SlackConfirm instance) =>
       'ok_text': instance.ok_text,
       'dismiss_text': instance.dismiss_text,
     };
-
-SlackFile _$SlackFileFromJson(Map<String, dynamic> json) => SlackFile()
-  ..title = json['title'] as String?
-  ..initial_comment = json['initial_comment'] as String?
-  ..filePath = json['filePath'] as String?
-  ..fileName = json['fileName'] as String?
-  ..mimeType = json['mimeType'] as String?;
-
-Map<String, dynamic> _$SlackFileToJson(SlackFile instance) => <String, dynamic>{
-      'title': instance.title,
-      'initial_comment': instance.initial_comment,
-      'filePath': instance.filePath,
-      'fileName': instance.fileName,
-      'mimeType': instance.mimeType,
-    };
diff --git a/lib/utils/slack/slack_sender.dart b/lib/utils/slack/slack_sender.dart
index ac6fd2e..b8c08cc 100644
--- a/lib/utils/slack/slack_sender.dart
+++ b/lib/utils/slack/slack_sender.dart
@@ -109,15 +109,22 @@ class SlackSender {
     return form;
   }
 
-  void sendFile(String channel, SlackFile file,
+  Future sendFile(String channel, SlackFile file,
       {String? targetUser,
       Function(String)? completeListener,
       Function(Exception)? errorListener}) async {
+    var c = Completer();
     _completeListener = completeListener;
     _errorListener = errorListener;
     var form = getPostForm(urlFileUplaod, channel, targetUser);
     form = await file.setFileData(form);
-    //To-do: send http
+    var response = await form.send();
+
+    var result = await response.stream.bytesToString();
+    if (_completeListener != null) _completeListener!(result);
+
+    c.complete();
+    return c.future;
   }
 
   /// ****************** Send template *******************
@@ -143,7 +150,7 @@ class SlackSender {
       SlackField.withParam('Test4', 'Value4'),
     ];
     message.attachments.add(attachment);
-    sends('app_notifier', message, targetUser: 'toki');
+    await sends('app_notifier', message, targetUser: 'toki');
   }
 
   Future sendBuild(String appName, SlackBuildType buildType, Color color,