please how can i retrieve an image from mysql database and display it in my html website

these are what I have tried:

app.py
@app.route('/customerDetails', methods=['GET', 'POST']) def customer Details():message = ''if “logged in” in session and ‘admin’ == session[‘role’]: user = session[“username”] ViewCustomerId = request.args.get(‘customerid’) cur = mysql.connection.cursor(MySQLdb.cursors.DictCursor) cur. execute(‘SELECT * FROM user WHERE id= % s’, (ViewCustomerId))View customer = cur .fetchone() ifViewcustomer != None: customer = Viewcustomer else: message = 'this customer does not exist in your database' cur.execute('SELECT image FROM user WHERE id= % s', (ViewCustomerId)) image = cur.fetchone() image = base64.b64encode(Image.open(io.BytesIO(str))) return render_template("customerDetails.html", user=user, customer=customer, image=image, message=message) else: return redirect(url_for("home"))

customerDetails.htm

<img class="" src="data:image/jpeg;base64,{{ image_data }}" alt="image" width="350" height="350" />