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Question

我在使用MYSQL作为数据库的Ubuntu 18.0上具有Flask应用程序，我确实有路由调用IBM Watson API来获取我的路由代码下方的预测

@app.route('/price', methods=['GET','POST'])
def price():
    try:
        PredictionItems = db.session.query(Prediction).all()
        PriceItems = db.session.query(Price).filter_by(CreatedAt = datetime.date(datetime.now())).all()

    except:
        print(" Cant connect to database ")

    form = PredicitForm(request.form)
    if request.method == 'POST' and form.validate():

        payload_scoring = {"fields":["Year", "Month", "Day", "Type"],"values":[[form.year.data,int(form.month.data),form.day.data,int(form.crop.data)]]}
        response_scoring = requests.post('Ibm-instance', json=payload_scoring, headers= config.header)
        print(json.loads(response_scoring.text)) 
        response = json.loads(response_scoring.text)

        try :
            #get result from the response 
            month_num = int(response['values'][0][1])
            month_i = "Month : " + calendar.month_name[month_num]
            year =  "Year : " + str(response['values'][0][0])
            day =  "Day : " + str(response['values'][0][2])
            crop = int(response['values'][0][3])
            if crop == 1 :
                crop_txt = 'Red Irish Potato'
            else :
                crop_txt = 'White Irish Potato'
            crop_txt_temp = "Crop : " + crop_txt
            pre_prams = str(response['values'][0][4])
            price_round = ("%.2f" % round(response['values'][0][5],2))
            price = str("Predict Price :  "+ price_round + " KSH (50KG)")
            return render_template('price.html', form=form, month_i=month_i, day=day, year=year, price=price, crop_txt_temp=crop_txt_temp, PredictionItems = PredictionItems, PriceItems = PriceItems)
        except KeyError :
            print('Cant get response ')
        return render_template('price.html', form = form, PredictionItems = PredictionItems, PriceItems = PriceItems)
    return render_template('price.html', form = form, PredictionItems = PredictionItems, PriceItems = PriceItems)

我在此路由的服务器日志中遇到此错误，我不明白这是什么意思

{'trace': '1810d2lal1abw', 'errors': [{'code': 'expired_authorization_token', 'message': 'Expired authorization token.', 'target': {'type': 'header', 'name': 'Authorization'}}]}, referer: https://example.com/price