尝试从Flask应用加载页面时浏览器挂起

我正在构建一个列出艺术家，地点和表演的网络应用。当用户单击列表中的场所时，应将其带到该场所的页面。相反，它只是挂起。它永远不会从场所列表页面移开，浏览器中的加载栏开始加载，但挂起率约为15-20％。没有错误返回，我已经等了几分钟，但它没有动。

我正在发布路线代码，但是如果有必要，您也可以查看Github存储库以获取完整的代码。

@app.route('/venues/<int:venue_id>')
def show_venue(venue_id):
  # shows the venue page with the given venue_id
  # TODO: replace with real venue data from the venues table, using venue_id
  # NOT WORKING YET
  
  # query db for the venue's ID
  venuequery = Venue.query.get(venue_id)

  # if it finds a venue with that ID
  if venuequery:
    venue_details = Venue

    data = {
      "id": venue_details.id, 
      "name": venue_details.name, 
      "genres": venue_details.genres, 
      "addres": venue_details.address, 
      "city": venue_details.city, 
      "state": venue_details.state, 
      "phone": venue_details.phone, 
      "website": venue_details.website, 
      "facebook_link": venue_details.facebook_link, 
      "seeking_talent": venue_details.seeking_talent, 
      "seeking_description": venue_details.seeking_description, 
      "image_link": venue_details.image_link, 
      }
     return render_template('pages/show_venue.html', venue=data)

编辑：当我在print(data)之前添加时，将return打印以下内容：

{'id': <sqlalchemy.orm.attributes.InstrumentedAttribute object at 0x7f83904780e0>, 'name': <sqlalchemy.orm.attributes.InstrumentedAttribute object at 0x7f8390478180>, 'genres': <sqlalchemy.orm.attributes.InstrumentedAttribute object at 0x7f83904784a0>, 'addres': <sqlalchemy.orm.attributes.InstrumentedAttribute object at 0x7f8390478360>, 'city': <sqlalchemy.orm.attributes.InstrumentedAttribute object at 0x7f8390478220>, 'state': <sqlalchemy.orm.attributes.InstrumentedAttribute object at 0x7f83904782c0>, 'phone': <sqlalchemy.orm.attributes.InstrumentedAttribute object at 0x7f8390478400>, 'website': <sqlalchemy.orm.attributes.InstrumentedAttribute object at 0x7f8390478680>, 'facebook_link': <sqlalchemy.orm.attributes.InstrumentedAttribute object at 0x7f83904785e0>, 'seeking_talent': <sqlalchemy.orm.attributes.InstrumentedAttribute object at 0x7f8390478720>, 'seeking_description': <sqlalchemy.orm.attributes.InstrumentedAttribute object at 0x7f83904787c0>, 'image_link': <sqlalchemy.orm.attributes.InstrumentedAttribute object at 0x7f8390478540>}