Add missed argument.

app/main/routes.py

@@ -87,7 +87,7 @@ def user_popup(username):
 @bp.route('/edit_profile', methods=['GET', 'POST'])
 @login_required
 def edit_profile():
-    form = EditProfileForm(request.form)
+    form = EditProfileForm(urrent_user.username, request.form)
     if form.validate_on_submit():
         current_user.username = form.username.data
         current_user.about_me = form.about_me.data