update code for flask 3.0

views/filesupload.py

@@ -1,7 +1,8 @@
 # -*- coding: utf-8 -*-
 
-from flask import Blueprint, Flask, request, flash, render_template, url_for, session, redirect, abort, make_response, escape, flash, abort, send_file, escape, send_from_directory
+from flask import Blueprint, Flask, request, flash, render_template, url_for, session, redirect, abort, make_response, flash, abort, send_file, send_from_directory
 from werkzeug.utils import secure_filename
+from markupsafe import escape
 from PIL import Image
 import time
 import sqlite3