diff --git a/lib/framework/init_route.py b/lib/framework/init_route.py
index ee94855..8f3fa59 100644
--- a/lib/framework/init_route.py
+++ b/lib/framework/init_route.py
@@ -86,16 +86,12 @@ def open_file(path):
 @F.app.route("/file/<path:path>")
 @F.check_api
 def file2(path):
-    F.logger.debug('file2 :%s', path)
-    return send_from_directory('/', path)
-
-
+    # 윈도우 drive 필요 없음
+    return send_from_directory('/', path, as_attachment=True)
 
 
 @F.app.route("/upload", methods=['GET', 'POST'])
 def upload():
-    # curl -F file=@downloader_video.tar https://dev.soju6jan.com/up
-    # 
     try:
         if request.method == 'POST':
             f = request.files['file']
diff --git a/lib/framework/version.py b/lib/framework/version.py
index 387ac32..ab14ec9 100644
--- a/lib/framework/version.py
+++ b/lib/framework/version.py
@@ -1 +1 @@
-VERSION="4.0.20"
\ No newline at end of file
+VERSION="4.0.21"
\ No newline at end of file
diff --git a/lib/plugin/model_setting.py b/lib/plugin/model_setting.py
index fdbc35d..853d65f 100644
--- a/lib/plugin/model_setting.py
+++ b/lib/plugin/model_setting.py
@@ -61,7 +61,9 @@ def get_model_setting(package_name, logger, table_name=None):
         @staticmethod
         def get_datetime(key):
             try:
-                return datetime.strptime(ModelSetting.get(key), '%Y-%m-%d %H:%M:%S.%f')
+                tmp = ModelSetting.get(key)
+                if tmp != None and tmp != '':
+                    return datetime.strptime(tmp, '%Y-%m-%d %H:%M:%S.%f')
             except Exception as e:
                 logger.error(f"Exception:{str(e)} [{key}]")
                 logger.error(traceback.format_exc())
diff --git a/lib/support/libsc/sc.cpython-310-aarch64-linux-gnu.so b/lib/support/libsc/sc.cpython-310-aarch64-linux-gnu.so
new file mode 100644
index 0000000..2bf2287
Binary files /dev/null and b/lib/support/libsc/sc.cpython-310-aarch64-linux-gnu.so differ