Fix some issues

app.py

@@ -4,7 +4,6 @@ from ldap3 import Server, Connection, ALL, MODIFY_REPLACE
 from flask import Flask, g, request, session, redirect, url_for, render_template
 from flask_simpleldap import LDAP
 from flask_bootstrap import Bootstrap
-from readability import Document
 from readabilipy import simple_json_from_html_string
 import os
 import sqlite3
@@ -105,9 +104,9 @@ def login():
             session['user_id'] = request.form['user']
             session['passwd'] = request.form['passwd']
 
-            if session['next']:
-                next = session['next']
-                session['next'] = ''
+            if 'next_redirect' in session:
+                next = session['next_redirect']
+                session['next_redirect'] = ''
                 return redirect(next)
             return redirect('/')
     return render_template('login.j2')
@@ -134,7 +133,7 @@ def read_article(article_id):
 @app.route('/add', methods=['GET', 'POST'])
 def add_url():
     if not 'user_id' in session:
-        session['next'] = request.url
+        session['next_redirect'] = request.url
         return redirect(url_for('login'))
     if request.method == 'POST':
         url = request.form['url']

requirements.txt

@@ -4,5 +4,5 @@ Flask-Login==0.5.0
 Flask-SimpleLDAP==1.4.0
 python-ldap==3.2.0
 ldap3==2.7
-readability-lxml==0.8.1
+readabilipy==0.2.0
 requests==2.24.0