Build successful when deploying web application on heroku but can not view site because I get an err-CodePudding

[message from Heroku error log][1]

$ heroku logs --tail Error: Cannot find module './toString' Require stack:

C:/Users/esraw/AppData/Roaming/npm/node_modules/heroku/node_modules/lodash/capitalize.js
C:/Users/esraw/AppData/Roaming/npm/node_modules/heroku/node_modules/@heroku-cli/plugin-run/node_modules/cli-ux/lib/styled/table.js
C:/Users/esraw/AppData/Roaming/npm/node_modules/heroku/node_modules/@heroku-cli/plugin-run/node_modules/cli-ux/lib/index.js
C:/Users/esraw/AppData/Roaming/npm/node_modules/heroku/node_modules/@heroku-cli/plugin-run/lib/lib/log-displayer.js
C:/Users/esraw/AppData/Roaming/npm/node_modules/heroku/node_modules/@heroku-cli/plugin-run/lib/commands/logs.js
C:/Users/esraw/AppData/Roaming/npm/node_modules/heroku/node_modules/@oclif/config/lib/plugin.js
C:/Users/esraw/AppData/Roaming/npm/node_modules/heroku/node_modules/@oclif/config/lib/config.js
C:/Users/esraw/AppData/Roaming/npm/node_modules/heroku/node_modules/@oclif/config/lib/index.js
C:/Users/esraw/AppData/Roaming/npm/node_modules/heroku/node_modules/@oclif/command/lib/command.js- C:/Users/esraw/AppData/Roaming/npm/node_modules/heroku/node_modules/@oclif/command/lib/index.js
C:/Users/esraw/AppData/Roaming/npm/node_modules/heroku/bin/run at Function.Module._resolveFilename (node:internal/modules/cjs/loader:933:15) at Function.Module._load (node:internal/modules/cjs/loader:778:27) at Module.require (node:internal/modules/cjs/loader:999:19) at require (node:internal/modules/cjs/helpers:102:18) at Object. (C:/Users/esraw/AppData/Roaming/npm/node_modules/heroku/node_modules/lodash/capitalize.js:1:16) at Module._compile (node:internal/modules/cjs/loader:1097:14) at Object.Module._extensions..js (node:internal/modules/cjs/loader:1149:10) at Module.load (node:internal/modules/cjs/loader:975:32) at Function.Module._load (node:internal/modules/cjs/loader:822:12) at Module.require (node:internal/modules/cjs/loader:999:19)

CodePudding user response：

I have had this issue in the past and it was pretty annoying for me as well. It seems like heroku cannot find a node module. I don't know if this would work for you, but in your .gitignore make sure you remove /node_modules. I think the issue is that heroku cannot find the node module.

CodePudding user response：

Please check your package.json file. If you found any code under devDependencies. Move them under the dependencies section.