meh ?

Flask/app.py

@@ -417,7 +417,7 @@ def allowed_file(filename):
     return '.' in filename and \
            filename.rsplit('.', 1)[1].lower() in ALLOWED_EXTENSIONS
 
-@app.route('/upload_file/', methods=['POST'])
+@app.route('/upload_file/', methods=['POST', "GET"])
 @login_required
 def upload_file():
     print(request.files)

Flask/templates/settings.html

@@ -74,7 +74,7 @@
     
     </table>
 </form>
-<form method="post" action="/upload_file/">
+<form method="POST" action="/upload_file/">
     <input type="file" id="file1">
     <input type="file" id="file2">
     <input type="submit"  name="settings" id="submit" value="send file" class="button"/>