Çözüldü Python Flask Hata

from flask import Flask,render_template,flash,redirect,url_for,session,logging,request
from flask_mysqldb import MySQL
from wtforms import Form,StringField,TextAreaField,PasswordField,validators
from passlib.hash import sha256_crypt
from functools import wraps



app = Flask(__name__)
app.secret_key = "anasayfa"
app.config["MYSQL_HOST"] = "localhost"
app.config["MYSQL_USER"] = "root"
app.config["MYSQL_PASSWORD"] = ""
app.config["MYSQL_DB"] = "mesaj proje"
app.config["MYSQL_CURSORCLASS"] = "DictCursor"
mysql = MySQL(app)

class register_form(Form):
    name = StringField("İsim Soyisim:",validators=[validators.length(min = 4 ,max = 25)])
    username = StringField("kullanıcı adı:",validators=[validators.length(min = 4 ,max = 25)])
    email = StringField("email adresi:",validators=[validators.Email(message="lütfen geçerli bir email adresi giriniz.")])

    password = PasswordField("şifre",validators=[
        validators.DataRequired(message = "lütfen bir parola giriniz."),
        validators.EqualTo(fieldname = "confirm",message = "parolanız uyuşmuyor")


    ])
    confirm = PasswordField("parola doğrula.")
class loginform(Form):
    username = StringField("kullanıcı adı :")
    password = PasswordField("sifre:")

class asdform(Form):
    username = StringField(" ")
    password = PasswordField(" ")


class search(Form):
    username = StringField("")

def login_required(f):
    @wraps(f)
    def decorated_function(*args, **kwargs):
        if "logged_in" in session:
           
            return f(*args, **kwargs)
        else:
            flash("Bu sayfa görüntülenemiyor lütfen önce giriş yapını","danger")
            return redirect(url_for("login"))  
    return decorated_function

@app.route("/register",methods = ["GET","POST"])
def register():
    form = register_form(request.form)

    if request.method == "POST" and form.validate():
        name = form.name.data
        username = form.username.data
        email = form.email.data
        password = sha256_crypt.encrypt(form.password.data)
        cursor = mysql.connection.cursor()
        sorgu = "Insert into users(name,username,email,password) VALUES(%s,%s,%s,%s)"
        cursor.execute(sorgu,(name,username,email,password))
        mysql.connection.commit()
        cursor.close()
        flash('başarılı kayıt olundu.', 'success')

        return redirect(url_for("anasayfa"))

    else:  
        return render_template("register.html",form=form)

session["logged_in"]
@app.route("/login",methods = ["GET","POST"])
def login():
    form = loginform(request.form)
    if request.method == "POST" and form.validate():
        username = form.username.data
        password_entered = form.password.data
        cursor = mysql.connection.cursor()
        sorgu = "Select * From users where username = %s"
        result = cursor.execute(sorgu,(username,))
        if result > 0:
            data = cursor.fetchone()
            real_password = data["password"]
            if sha256_crypt.verify(password_entered,real_password):
                flash("başarıyla giriş yaptınız...","success")
                session["logged_in"] = True
                session["username"] = username
 
               
               
                return redirect(url_for("anasayfa"))
            else:
                flash("parolanız yanlış...","danger")
                return redirect(url_for("login"))
        else:
            flash("böyle bir kullanıcı bulunmuyor....","danger")
            return redirect(url_for("login"))  

    else:  
        return render_template("login.html",form=form)  

@app.route("/logout")
def logout():
    session.clear()
    return redirect(url_for("login"))
@app.route("/User-grid")
@login_required
def User_grid():
    cursor = mysql.connection.cursor()
    sorgu = "Select * from users"
    result = cursor.execute(sorgu)
    users = cursor.fetchall()
    return render_template("User_grid.html",articles=users)



@app.route("/",methods = ["GET","POST"])
@login_required
def anasayfa():
    if request.method == "POST":
        cursor = mysql.connection.cursor()
        sorgu = "Insert into içerikler(paylaşan,içerik) VALUES(%s,%s)"
        içerik = request.form.get('içerik')
        cursor.execute(sorgu,(session["username"],içerik))
        mysql.connection.commit()
        cursor.close()
        return redirect(url_for("anasayfa"))                  
    else:
       
       
        cursor = mysql.connection.cursor()
        sorgu = "Select * From users where username = %s"
        result = cursor.execute(sorgu,(session["username"],))
        full = cursor.fetchone()
        fullname = full["name"]
        cursor = mysql.connection.cursor()
        sorgu2 = "Select * From içerikler"
        result = cursor.execute(sorgu2,)
        iç = cursor.fetchall()
        return render_template("anasayfa.html",name = fullname,içerikler = iç)
       

           

@app.route("/<string:id>",methods = ["GET","POST"])
@login_required
def brt(id):
    form = asdform(request.form)
    cursor = mysql.connection.cursor()
    sorgu = "Select * from users"
    result = cursor.execute(sorgu)
    if request.method == "POST":
        mesaj = form.username.data
        cursor = mysql.connection.cursor()
        sorgu = "Insert into mesajlar(kimden,kime,içerik) VALUES(%s,%s,%s)"
        cursor.execute(sorgu,(session["username"],id,mesaj))
        mysql.connection.commit()
        cursor.close()
        return redirect("/"+id)
    else:
        articles = cursor.fetchall()
        cursor = mysql.connection.cursor()
        sorgu = "Select * from mesajlar"
        result = cursor.execute(sorgu)
        mesajlar = cursor.fetchall()
         
        return render_template("html.html",form=form,articles=articles,id=id,mesajlar=mesajlar)
@app.route("/")
def anasayfa1():
    return render_template("anasayfa.html")
if __name__ == "__main__":

    app.run(debug=True)