updateds folder path and regex

app/routes/file_format.py

@@ -1,5 +1,6 @@
 from flask import Blueprint, render_template, send_from_directory, abort, current_app
 from app.utils.helpers import login_required
+from app.utils.file_utils import get_download_format_folder
 import os
 
 file_format_bp  = Blueprint("file_format", __name__)
@@ -14,10 +15,7 @@ def download_format():
 @login_required
 def download_excel_format(filename):
 
-    download_folder = os.path.join(
-        current_app.root_path, "static", "downloads/format"
-    )
-
+    download_folder = get_download_format_folder()
     file_path = os.path.join(download_folder, filename)
 
     if not os.path.exists(file_path):