python之不允许的方法之所请求的 URL 不允许该方法

我正在尝试构建一个 python flask 应用程序，但是当我尝试将表单数据提交到 python 方法时遇到问题。

服务器抛出的问题是“Method Not Allowed”。

HTML CODE

<h1>Submit the Link</h1> 
    <form action="/submit_article" method="POST" name="form"> 
        <div class="col-md-4 col-md-offset-4"> 
            {{ form.hidden_tag() }} 
            <div class="form-group"> 
                <label class="control-label" for="description">Name</label> 
                {{ form.description }} 
            </div> 
            <div class="form-group"> 
                <label class="control-label" for="link">Link</label> 
                {{ form.link }} 
            </div> 
            <button class="btn btn-default" type="submit">Submit</button> 
        </div> 
    </form> 

PYTHON METHOD (submit_article)

@app.route('/submit_article', methods=['POST']) 
def submit_article(): 
  form = UploadForm() 
  if request.method == 'POST': 
    data = { 
        "_id": form.link.data, 
        "description": form.description.data, 
        "user": current_user.username, 
        "time": datetime.datetime.now() 
    } 
 
    try: 
        if((app.config['NEWS_COLLECTION'].insert(data))): 
            flash("Link added successfully", category="success") 
            return redirect(request.args.get("new") or url_for("new")) 
 
    except DuplicateKeyError: 
        flash("Article link already exists in the Database", category="error") 
        return render_template("submit_article.html") 
 
  return render_template('submit_article.html', title='login', form=form)