Flask + OpenLiteSpeed + WSGI，浏览器中的错误500，但命令行没有错误

Question

我正在尝试使用Flask在我的OpenLiteSpeed VPS中设置fastai图像推断应用程序。我有基本的“ Hello world”，但是尝试添加模型会破坏事情。在命令行中运行不会出错。如何解决问题？

app.py

from flask import Flask
from flask import request

from fastai.vision import *
learn = load_learner("","modelv2.pkl") # This line will break things
app = Flask(__name__)
@app.route("/")
def hello():
    return "Hello, World"
if __name__ == "__main__":
    app.run()

app.wsgi

#!/usr/bin/python
import sys
import logging
logging.basicConfig(stream=sys.stderr)
sys.path.insert(0,"/usr/local/lsws/website/html/python/")

from flask_app import app as application
application.secret_key = 'Add your secret key'