Flask-Moment本地化日期和时间显示不正常

照着GitHub上fork来的案例做，发现日期不能正常显示

原因在于根据案例将 {{moment.include_moment()}}的引入放在{% block scripts %}中，实际上并没有正确引入，产生异常，之后我在head中引入就能正常显示了

------------后台代码----------------
from flask import Flask, session, request,g
import config
from flask_bootstrap import Bootstrap
from flask_moment import Moment
from datetime import datetime

app = Flask(__name__)
app.config.from_object(config)
bootstrap = Bootstrap(app)
moment = Moment(app)

@app.route('/jq')
def boot():
    return render_template('jq.html', current_time=datetime.utcnow())
----前端代码--------------
{% extends "bootstrap/base.html" %}
{% block head %}
    {{moment.include_jquery()}}
    {{moment.include_moment()}}
    <!--使用中文-->
    {{moment.lang('zh-CN')}}
{% endblock %}
{% block body %}
<h1>Hello World!</h1>
<p>The local date and time is {{ moment(current_time).format('LLL')  }}.</p>
<p>That was {{ moment(current_time).fromNow(refresh=True) }}.</p>
{% endblock %}