我该如何解决这个名称未定义错误?

from bs4 import BeautifulSoup


def us_30():
    page = session.get('https://www.investing.com/indices/us-30-technical')
    soup = BeautifulSoup(page.content, 'html.parser')
    summary = soup.find(id="techStudiesInnerWrap")
    print(summary.div.text)
    name = soup.find("td", class_="first left symbol", string="RSI(14)")
    value = name.find_next('td')
    action = value.find_next('td')
    print(f"Name: {name.text}. Value:{value.text}. Action: {action.span.text}")


us_30()

我试图从网站上获得RSI值

Error: enter image description here