I have a simple FLASK-API which is related to authentication, I mean by simple log-in, register page. For the test by backend I use Postman, I also use MySQL for the database. When I am giving ID input from Postman for the delete user, I got an error message. I am dropping my delete route below.

@app.route('/delete', methods=['GET', 'POST'])

def delete():

message=''

cursor = mysql.connection.cursor(MySQLdb.cursors.DictCursor)

if request.method == 'POST': 
    for id in request.json.getlist('mycheckbox'):
        print(id)
        cursor.execute('DELETE FROM usertable WHERE id = {0}'.format(id))
        mysql.connection.commit()
    message='Successfully Deleted!'
return jsonify(message)

I have also log in and register routes, I use POST methods in Postman, and It works well, when I enter the e-mail, username, and password, It gives me jsonify message in postman like "you have successfully logged in, etc. However, if I want to delete a user by giving an ID only

{

"id": "18"

}

I got this message;

500 Internal Server Error, The server encountered an internal error and was unable to complete your request. Either the server is overloaded or there is an error in the application.