Flask-SQLAlchemy adds data to the database as written in the document, but it does not add it, and it does not report an error. What is the reason?

from flask import Flask, session
from flask import render_template
from flask_script import Manager
from flask import url_for
from flask import request, jsonify, json

from flask_cors import CORS

from flask_sqlalchemy import SQLAlchemy
import os

from flask_json import FlaskJSON, JsonError, json_response, as_json

from flask_marshmallow import Marshmallow

basedir = os.path.abspath(os.path.dirname(__file__))


app = Flask(__name__)

-sharp cors = CORS(app, resources={r"/api/*": {"origins": "*"}})
cors = CORS(app, resources={r"/*": {"origins": "*"}})
app.config["SECRET_KEY"] = "a string"
app.config["SQLALCHEMY_DATABASE_URI"] = "sqlite:///" + \
                                        os.path.join(basedir, "data.sqlite")
-sharp 
app.config["SQLALCHEMY_COMMIT_TEARDOWN"] = True

app.config["SQLALCHEMY_TRACK_MODIFICATIONS"] = False

manager = Manager(app)
db = SQLAlchemy(app)
ma = Marshmallow(app)

class Article(db.Model):
    """docstring for Article"""
    __tablename__ = "articles"
    id = db.Column(db.Integer, primary_key = True)
    title = db.Column(db.String(64))
    -sharp content = db.Column(db.Text)
    content = db.Column(db.Text)
    -sharp article_type = db.Column(db.String(64))
    -sharp tiem =  db.Column(db.DateTime)

class ArticleSchema(ma.ModelSchema):
    class Meta:
        medel = Article



@app.route("/")
def index():
    articles = Article.query.all()
    articles_schema = ArticleSchema()
    output = articles_schema.dump(articles).data
    return jsonify({"articles": output})


@app.route("/create", methods=["POST"])
def create():
    title = request.form["title"]
    content = request.form["content"]
    article = Article(title=title, content=content)
 
    db.session.add(article)
    db.session.commit()
    session["known"] = False
    
    -sharp-sharpcontent
    return content
 

if __name__ == "__main__":
    manager.run()

this is the vue used in the front end to send post requests

        methods:{
            submitArticle: function() {
                let data= {}
                data["title"] = this.title
                data["content"] = this.content
                
                console.log(data)
                this.$http.post("http://127.0.0.1:7626/create", data).then( res => {
                    console.log(res)
                })
            }
        }

the data returned by the server is always empty (below), so it is suspected that the data was not successfully added to the database, but the data can be queried in the command line window.

clipboard.png

clipboard.png

MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1b2c5fd-33ed8.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b2c5fd-33ed8.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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