centos部署flask项目时报错，请教如何解决

[Black_liu8561]

配置环境：centos7+apache+wsgi+anaconda虚拟环境
flask-sqlalchemy是2.1版本
报错如下：

代码如下：

from flask import Flask
from flask_sqlalchemy import SQLAlchemy
import os
from flask_login import UserMixin

basedir = os.path.abspath(os.path.dirname(__file__))

app = Flask(__name__)
app.config['SECRET_KEY'] = 'hard to guess string'
app.config['SQLALCHEMY_DATABASE_URI'] = \
    'mysql+pymysql://@'
app.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = False

db = SQLAlchemy(app)