Heroku 應用程序成功部署，但在加載站點時收到應用程序錯誤

Question

消息是應用程序已成功部署，但當我加載應用程序時顯示此錯誤：

An error occurred in the application and your page could not be served. If you are the application owner, check your logs for details. You can do this from the Heroku CLI with the command

我的日志顯示了一些錯誤，但我做錯了什么？

運行時：

$ heroku logs -a disastresponse --tail

這是 output：

2022-02-11T04:06:42.642514+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.9/importlib/__init__.py", line 127, in import_module
2022-02-11T04:06:42.642515+00:00 app[web.1]: return _bootstrap._gcd_import(name[level:], package, level)
2022-02-11T04:06:42.642516+00:00 app[web.1]: File "<frozen importlib._bootstrap>", line 1030, in _gcd_import
2022-02-11T04:06:42.642516+00:00 app[web.1]: File "<frozen importlib._bootstrap>", line 1007, in _find_and_load
2022-02-11T04:06:42.642516+00:00 app[web.1]: File "<frozen importlib._bootstrap>", line 984, in _find_and_load_unlocked
2022-02-11T04:06:42.642517+00:00 app[web.1]: ModuleNotFoundError: No module named 'app'
2022-02-11T04:06:42.642579+00:00 app[web.1]: [2022-02-11 04:06:42 +0000] [10] [INFO] Worker exiting (pid: 10)
2022-02-11T04:06:42.676775+00:00 app[web.1]: [2022-02-11 04:06:42 +0000] [4] [WARNING] Worker with pid 10 was terminated due to signal 15
2022-02-11T04:06:42.776963+00:00 app[web.1]: [2022-02-11 04:06:42 +0000] [4] [INFO] Shutting down: Master
2022-02-11T04:06:42.777013+00:00 app[web.1]: [2022-02-11 04:06:42 +0000] [4] [INFO] Reason: Worker failed to boot.

簡介：

web: gunicorn app:run

要求.txt

flask==2.0.2
gunicorn==20.1.0
joblib==1.1.0
nltk==3.6.5
plotly==5.1.0
numpy==1.22.2
pandas==1.4.0
pip==21.2.4
regex==2021.8.3
scikit-learn==1.0.1
scipy==1.7.3
sqlalchemy==1.4.27

這是我所有的 run.py 進口：

import json
import plotly
import pandas as pd
import numpy as np
import os

from nltk.stem import WordNetLemmatizer
from nltk.tokenize import word_tokenize

from flask import Flask
from flask import render_template, request, jsonify
from plotly.graph_objs import Bar
# from sklearn.externals import joblib
import joblib
from sqlalchemy import create_engine

app = Flask(__name__)

我錯過了什么嗎？

Answer 1

你的 Gunicorn 論點是倒退的。

由於您的應用程序 object 名為app並且位於名為run.py的文件中，因此您應該像這樣啟動 Gunicorn：

web: gunicorn run:app