Update app.py

app.py

@@ -1,4 +1,4 @@
-from flask import Flask, request, redirect, render_template, session
+from flask import Flask, request, redirect, render_template, session, url_for
 from flask_wtf import CSRFProtect
 import requests
 import uuid
@@ -54,7 +54,7 @@ def before_request():
         
 @app.route("/")
 def index():
-    return redirect('/id_type', _external=True, _scheme="https")
+    return redirect(url_for('/id_type'), _scheme="https")
 
 @app.route("/id_type/", methods=['GET'])
 def id_type():