将 node.js 应用程序部署到 heroku 时出错找不到模块 dotenv，并且 npm ERR！errno 1

分类：编程问答

如何解决将 node.js 应用程序部署到 heroku 时出错找不到模块 dotenv，并且 npm ERR！errno 1

我正在尝试将我的第一个 node.js 应用程序上传到 heroku。构建显示成功，但无法在浏览器中打开该应用程序。这是部署的日志尾部。我不太确定问题出在哪里。使用邮递员测试时，所有本地主机路由实际上都在工作。我正在使用快速生成器，因此 PORT 在 .bin/www 中声明。我也在使用 .env。我有点不知道下一步该往哪里看。有什么建议么？非常感谢！

2021-01-11T22:10:14.214188+00:00 app[web.1]: > finale-backend@0.0.0 start /app
2021-01-11T22:10:14.214189+00:00 app[web.1]: > node ./bin/www
2021-01-11T22:10:14.214189+00:00 app[web.1]: 
2021-01-11T22:10:14.285451+00:00 app[web.1]: internal/modules/cjs/loader.js:818
2021-01-11T22:10:14.285453+00:00 app[web.1]: throw err;
2021-01-11T22:10:14.285453+00:00 app[web.1]: ^
2021-01-11T22:10:14.285454+00:00 app[web.1]: 
2021-01-11T22:10:14.285454+00:00 app[web.1]: Error: Cannot find module 'dotenv'
2021-01-11T22:10:14.285454+00:00 app[web.1]: Require stack:
2021-01-11T22:10:14.285455+00:00 app[web.1]: - /app/app.js
2021-01-11T22:10:14.285455+00:00 app[web.1]: - /app/bin/www
2021-01-11T22:10:14.285456+00:00 app[web.1]: at Function.Module._resolveFilename (internal/modules/cjs/loader.js:815:15)
2021-01-11T22:10:14.285456+00:00 app[web.1]: at Function.Module._load (internal/modules/cjs/loader.js:667:27)
2021-01-11T22:10:14.285457+00:00 app[web.1]: at Module.require (internal/modules/cjs/loader.js:887:19)
2021-01-11T22:10:14.285457+00:00 app[web.1]: at require (internal/modules/cjs/helpers.js:74:18)
2021-01-11T22:10:14.285458+00:00 app[web.1]: at Object.<anonymous> (/app/app.js:1:1)
2021-01-11T22:10:14.285458+00:00 app[web.1]: at Module._compile (internal/modules/cjs/loader.js:999:30)
2021-01-11T22:10:14.285459+00:00 app[web.1]: at Object.Module._extensions..js (internal/modules/cjs/loader.js:1027:10)
2021-01-11T22:10:14.285459+00:00 app[web.1]: at Module.load (internal/modules/cjs/loader.js:863:32)
2021-01-11T22:10:14.285459+00:00 app[web.1]: at Function.Module._load (internal/modules/cjs/loader.js:708:14)
2021-01-11T22:10:14.285460+00:00 app[web.1]: at Module.require (internal/modules/cjs/loader.js:887:19) {
2021-01-11T22:10:14.285460+00:00 app[web.1]: code: 'MODULE_NOT_FOUND',2021-01-11T22:10:14.285461+00:00 app[web.1]: requireStack: [ '/app/app.js','/app/bin/www' ]
2021-01-11T22:10:14.285461+00:00 app[web.1]: }
2021-01-11T22:10:14.301983+00:00 app[web.1]: npm ERR! code ELIFECYCLE
2021-01-11T22:10:14.302357+00:00 app[web.1]: npm ERR! errno 1
2021-01-11T22:10:14.309690+00:00 app[web.1]: npm ERR! finale-backend@0.0.0 start: `node ./bin/www`
2021-01-11T22:10:14.309804+00:00 app[web.1]: npm ERR! Exit status 1
2021-01-11T22:10:14.309965+00:00 app[web.1]: npm ERR!
2021-01-11T22:10:14.310034+00:00 app[web.1]: npm ERR! Failed at the finale-backend@0.0.0 start script.
2021-01-11T22:10:14.310119+00:00 app[web.1]: npm ERR! This is probably not a problem with npm. There is likely additional logging output above.
2021-01-11T22:10:14.317026+00:00 app[web.1]: 
2021-01-11T22:10:14.317243+00:00 app[web.1]: npm ERR! A complete log of this run can be found in:
2021-01-11T22:10:14.317339+00:00 app[web.1]: npm ERR!     /app/.npm/_logs/2021-01-11T22_10_14_310Z-debug.log
2021-01-11T22:10:14.361923+00:00 heroku[web.1]: Process exited with status 1
2021-01-11T22:10:14.435764+00:00 heroku[web.1]: State changed from starting to crashed
2021-01-11T22:10:14.439118+00:00 heroku[web.1]: State changed from crashed to starting
2021-01-11T22:10:16.805923+00:00 heroku[web.1]: Starting process with command `npm start`
2021-01-11T22:10:19.751944+00:00 app[web.1]: 
2021-01-11T22:10:19.751961+00:00 app[web.1]: > finale-backend@0.0.0 start /app
2021-01-11T22:10:19.751962+00:00 app[web.1]: > node ./bin/www
2021-01-11T22:10:19.751963+00:00 app[web.1]: 
2021-01-11T22:10:19.808881+00:00 app[web.1]: internal/modules/cjs/loader.js:818
2021-01-11T22:10:19.808883+00:00 app[web.1]: throw err;
2021-01-11T22:10:19.808883+00:00 app[web.1]: ^
2021-01-11T22:10:19.808883+00:00 app[web.1]: 
2021-01-11T22:10:19.808884+00:00 app[web.1]: Error: Cannot find module 'dotenv'
2021-01-11T22:10:19.808884+00:00 app[web.1]: Require stack:
2021-01-11T22:10:19.808884+00:00 app[web.1]: - /app/app.js
2021-01-11T22:10:19.808885+00:00 app[web.1]: - /app/bin/www
2021-01-11T22:10:19.808885+00:00 app[web.1]: at Function.Module._resolveFilename (internal/modules/cjs/loader.js:815:15)
2021-01-11T22:10:19.808885+00:00 app[web.1]: at Function.Module._load (internal/modules/cjs/loader.js:667:27)
2021-01-11T22:10:19.808886+00:00 app[web.1]: at Module.require (internal/modules/cjs/loader.js:887:19)
2021-01-11T22:10:19.808886+00:00 app[web.1]: at require (internal/modules/cjs/helpers.js:74:18)
2021-01-11T22:10:19.808887+00:00 app[web.1]: at Object.<anonymous> (/app/app.js:1:1)
2021-01-11T22:10:19.808887+00:00 app[web.1]: at Module._compile (internal/modules/cjs/loader.js:999:30)
2021-01-11T22:10:19.808887+00:00 app[web.1]: at Object.Module._extensions..js (internal/modules/cjs/loader.js:1027:10)
2021-01-11T22:10:19.808888+00:00 app[web.1]: at Module.load (internal/modules/cjs/loader.js:863:32)
2021-01-11T22:10:19.808888+00:00 app[web.1]: at Function.Module._load (internal/modules/cjs/loader.js:708:14)
2021-01-11T22:10:19.808889+00:00 app[web.1]: at Module.require (internal/modules/cjs/loader.js:887:19) {
2021-01-11T22:10:19.808889+00:00 app[web.1]: code: 'MODULE_NOT_FOUND',2021-01-11T22:10:19.808889+00:00 app[web.1]: requireStack: [ '/app/app.js','/app/bin/www' ]
2021-01-11T22:10:19.808890+00:00 app[web.1]: }
2021-01-11T22:10:19.834122+00:00 app[web.1]: npm ERR! code ELIFECYCLE
2021-01-11T22:10:19.834754+00:00 app[web.1]: npm ERR! errno 1
2021-01-11T22:10:19.843644+00:00 app[web.1]: npm ERR! finale-backend@0.0.0 start: `node ./bin/www`
2021-01-11T22:10:19.843996+00:00 app[web.1]: npm ERR! Exit status 1
2021-01-11T22:10:19.844353+00:00 app[web.1]: npm ERR!
2021-01-11T22:10:19.844619+00:00 app[web.1]: npm ERR! Failed at the finale-backend@0.0.0 start script.
2021-01-11T22:10:19.844914+00:00 app[web.1]: npm ERR! This is probably not a problem with npm. There is likely additional logging output above.
2021-01-11T22:10:19.858827+00:00 app[web.1]: 
2021-01-11T22:10:19.859298+00:00 app[web.1]: npm ERR! A complete log of this run can be found in:
2021-01-11T22:10:19.859536+00:00 app[web.1]: npm ERR!     /app/.npm/_logs/2021-01-11T22_10_19_845Z-debug.log
2021-01-11T22:10:19.946324+00:00 heroku[web.1]: Process exited with status 1
2021-01-11T22:10:20.030800+00:00 heroku[web.1]: State changed from starting to crashed
2021-01-11T22:10:22.579029+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host=XXXXXX.herokuapp.com request_id=28ed0f16-48b7-4edb-a4d4-bf5af57518a5 fwd="91.106.154.160" dyno= connect= service= status=503 bytes= protocol=https
2021-01-11T22:10:23.309377+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/favicon.ico" host=XXXXXX.herokuapp.com request_id=967010fc-984e-49c7-a73e-9d9758907f49 fwd="91.106.154.160" dyno= connect= service= status=503 bytes= protocol=https

我的包 json 如下所示：

{
  "name": "finale-backend","version": "0.0.0","private": true,"scripts": {
    "start": "node ./bin/www","dev": "nodemon ./bin/www"
  },"dependencies": {
    "bcrypt": "^5.0.0","body-parser": "^1.19.0","cookie-parser": "~1.4.4","cors": "^2.8.5","debug": "~2.6.9","express": "~4.16.1","helmet": "^4.3.1","jsonwebtoken": "^8.5.1","logger": "0.0.1","morgan": "~1.9.1","nodemon": "^2.0.7","pg": "^8.5.1"
  },"devDependencies": {
    "dotenv": "^8.2.0"
  },"engines": {
    "node": "12.x"
  }
}

而且我在我的入口点 app.js 中需要 dotenv 像这样

require('dotenv').config();
const express = require('express');
const path = require('path');
const cookieParser = require('cookie-parser');
const logger = require('morgan');
const cors = require('cors')

解决方法

Heroku 似乎默认没有安装 devDependencies。您可能希望将 dotenv 移动到 package.json 中的依赖项，然后重试。

如果您的生产环境中不需要 dotenv，您可能希望完全删除 require 并使用不同的命令来运行您的开发服务器，如下所述：

https://www.npmjs.com/package/dotenv#preload

node -r dotenv/config your_script.js

当在 Heroku 上找不到 dotenv 依赖项时，这将防止您的服务器在生产中崩溃。

版权声明：本文内容由互联网用户自发贡献，该文观点与技术仅代表作者本人。本站仅提供信息存储空间服务，不拥有所有权，不承担相关法律责任。如发现本站有涉嫌侵权/违法违规的内容， 请发送邮件至 dio@foxmail.com 举报，一经查实，本站将立刻删除。

相关推荐

matplotlib报错：AttributeError: module 'backend_interagg' has no attribute 'FigureCanvas'. Did you mean: 'FigureCanvasAgg'?
使用本地python环境可以成功执行 import pandas as pd import matplotlib.pyplot as plt # 设置字体 plt.rcParams[&#39;font.sans-serif&#39;] = [&#39;SimHei&#39;] # 能正确显示负号 p
gitlab登录失败，报错：This challenge page was accidentally cached by an intermediary and is no longer available.
设置时间 控制面板
后端开发常见错误
错误1：Request method ‘DELETE‘ not supported 错误还原：controller层有一个接口，访问该接口时报错：Request method ‘DELETE‘ not supported 错误原因：没有接收到前端传入的参数，修改为如下 参考 错误2：cannot r
docker常见错误
错误1：启动docker镜像时报错：Error response from daemon: driver failed programming external connectivity on endpoint quirky_allen 解决方法：重启docker -&gt; systemctl r
idea常见错误
错误1：private field ‘xxx‘ is never assigned 按Altʾnter快捷键，选择第2项 参考：https://blog.csdn.net/shi_hong_fei_hei/article/details/88814070 错误2：启动时报错，不能找到主启动类 #
pip安装依赖失败
报错如下，通过源不能下载，最后警告pip需升级版本 Requirement already satisfied: pip in c:\users\ychen\appdata\local\programs\python\python310\lib\site-packages (22.0.4) Coll
maven常见错误
错误1：maven打包报错 错误还原：使用maven打包项目时报错如下 [ERROR] Failed to execute goal org.apache.maven.plugins:maven-resources-plugin:3.2.0:resources (default-resources)
cloud项目中常见错误
错误1：服务调用时报错 服务消费者模块assess通过openFeign调用服务提供者模块hires 如下为服务提供者模块hires的控制层接口 @RestController @RequestMapping(&quot;/hires&quot;) public class FeignControl
springboot常见错误
错误1：运行项目后报如下错误 解决方案 报错2：Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.8.1:compile (default-compile) on project sb 解决方案：在pom.
springmvc拦截器中使用redisTemplate报空指针异常
参考 错误原因 过滤器或拦截器在生效时，redisTemplate还没有注入 解决方案：在注入容器时就生效 @Component //项目运行时就注入Spring容器 public class RedisBean { @Resource private RedisTemplate&lt;String
vite报错：npm ERR! command C:WINDOWSsystem32cmd.exe /d /s /c C:UsersychenAppDataLocalTempnpx-dde1c848.cmd
使用vite构建项目报错 C:\Users\ychen\work&gt;npm init @vitejs/app @vitejs/create-app is deprecated, use npm init vite instead C:\Users\ychen\AppData\Local\npm-
VM VirtualBox中安装centos时报错：设置基础软件仓库时出错
参考1 参考2 解决方案 # 点击安装源 协议选择 http:// 路径填写 mirrors.aliyun.com/centos/8.3.2011/BaseOS/x86_64/os URL类型 软件库URL 其他路径 # 版本 7 mirrors.aliyun.com/centos/7/os/x86
kafka常见问题
报错1 [root@slave1 data_mocker]# kafka-console-consumer.sh --bootstrap-server slave1:9092 --topic topic_db [2023-12-19 18:31:12,770] WARN [Consumer clie
hive常见问题
错误1 # 重写数据 hive (edu)&gt; insert overwrite table dwd_trade_cart_add_inc &gt; select data.id, &gt; data.user_id, &gt; data.course_id, &gt; date_format(
装载数据时报错：Failed to execute spark task, with exception 'org.apache.hadoop.hive.ql.metadata.HiveException(Failed to create spark client.)'
错误1 hive (edu)&gt; insert into huanhuan values(1,&#39;haoge&#39;); Query ID = root_20240110071417_fe1517ad-3607-41f4-bdcf-d00b98ac443e Total jobs = 1
flume常见问题
报错1：执行到如下就不执行了，没有显示Successfully registered new MBean. [root@slave1 bin]# /usr/local/software/flume-1.9.0/bin/flume-ng agent -n a1 -c /usr/local/softwa
hadoop集群常见错误
虚拟及没有启动任何服务器查看jps会显示jps，如果没有显示任何东西 [root@slave2 ~]# jps 9647 Jps 解决方案 # 进入/tmp查看 [root@slave1 dfs]# cd /tmp [root@slave1 tmp]# ll 总用量 48 drwxr-xr-x. 2
hive常见错误
报错1 hive&gt; show databases; OK Failed with exception java.io.IOException:java.lang.RuntimeException: Error in configuring object Time taken: 0.474 se
Linux常见错误
报错1 [root@localhost ~]# vim -bash: vim: 未找到命令 安装vim yum -y install vim* # 查看是否安装成功 [root@hadoop01 hadoop]# rpm -qa |grep vim vim-X11-7.4.629-8.el7_9.x
使用sqoop一直卡在：mapreduce.Job: Running job: job_1703173956074_0001
修改hadoop配置 vi /usr/local/software/hadoop-2.9.2/etc/hadoop/yarn-site.xml # 添加如下 &lt;configuration&gt; &lt;property&gt; &lt;name&gt;yarn.nodemanager.res
pythonJavaScriptjavaHTMLPHPreactjsC#AndroidCSSNode.jssqlrpython-3.xMysqLjQueryc++pandasFlutterangularIOSdjangolinuxswifttypescript路由器JSON路由器设置无线路由器h3c华三华三路由器设置华三路由器电脑软件教程arraysdocker软件图文教程Cvue.jslaravelspring-boot