PersonalWebsite-YingTuo

https://tuoying.herokuapp.com

issues

Issue 1 After I create-reate-app by using npx create-react-app my-app, I try to run my server by npm start, it throw an error:

events.js:174 throw er; 
  // Unhandled 'error' event ^ Error: getaddrinfo ENOTFOUND x86_64-apple-darwin13.4.0

I sloved this by command unset HOST from Issue1

Issue 2 In App.js I coded and error reported:

  class App extends Component () {...}
     TypeError: Cannot set property 'props' of undefined

I sloved this from Issue2

   class App extends Component {...}

In object-oriented programing it's called inheritance, when I extend/inherit a class to use its component, you called by its name and it's not function. Here I extend Component class not function, that's why I don't use parenthesis and also function need a parameter.

Issue 3 After I changed the name of src/components/portfolioList to src/components/PortfolioList, I filed to develope my App on heroku:

  remote: npm ERR! code ELIFECYCLE
  remote: npm ERR! errno 1
  remote: npm ERR! mysite@0.1.0 build: `react-scripts build`
  remote: npm ERR! Exit status 1
  remote: npm ERR! 
  remote: npm ERR! Failed at the mysite@0.1.0 build script.
  remote: npm ERR! This is probably not a problem with npm. There is likely additional logging output above.
  remote: 
  remote: npm ERR! A complete log of this run can be found in:
  remote: npm ERR!     /tmp/npmcache.u1Pt3/_logs/2020-06-12T02_15_56_993Z-debug.log
  remote: 
  remote: -----> Build failed
  remote:        
  remote:        We're sorry this build is failing! You can troubleshoot common issues here:
  remote:        https://devcenter.heroku.com/articles/troubleshooting-node-deploys
  remote:        
  remote:        Some possible problems:
  remote:        
  remote:        - Node version not specified in package.json
  remote:          https://devcenter.heroku.com/articles/nodejs-support#specifying-a-node-js-version
  remote:        
  remote:        Love,
  remote:        Heroku
  remote:        
  remote:  !     Push rejected, failed to compile Node.js app.
  remote: 
  remote:  !     Push failed
  remote: Verifying deploy...
  remote: 
  remote: !	Push rejected to tuoying.
  remote: 
  To https://git.heroku.com/tuoying.git
  ! [remote rejected]   master -> master (pre-receive hook declined)
  error: failed to push some refs to 'https://git.heroku.com/tuoying.git'