Errors when running project

[bitgainz]

Local test - when submitting credentials
Proxy error: Could not proxy request /api/items from localhost:3000 to http://localhost:5000/. [1] See https://nodejs.org/api/errors.html#errors_common_system_errors for more information (ECONNREFUSED).

When deploying to heroku - error log :

-----> Building on the Heroku-20 stack
-----> Node.js app detected

-----> Creating runtime environment

   NPM_CONFIG_LOGLEVEL=error
   NODE_VERBOSE=false
   NODE_ENV=production
   NODE_MODULES_CACHE=true

-----> Installing binaries
engines.node (package.json): unspecified
engines.npm (package.json): unspecified (use default)

   Resolving node version 12.x...
   Downloading and installing node 12.20.1...
   Using default npm version: 6.14.10

-----> Installing dependencies
Installing node modules (package.json)

   > [email protected] postinstall /tmp/build_e7159bee/node_modules/core-js
   > node -e "try{require('./postinstall')}catch(e){}"
   
   
   > [email protected] postinstall /tmp/build_e7159bee/node_modules/nodemon
   > node bin/postinstall || exit 0
   
   Love nodemon? You can now support the project via the open collective:
    > https://opencollective.com/nodemon/donate
   
   added 529 packages from 324 contributors and audited 531 packages in 19.175s
   
   7 packages are looking for funding
     run `npm fund` for details
   
   found 1 low severity vulnerability
     run `npm audit fix` to fix them, or `npm audit` for details

-----> Build
Running heroku-postbuild

   > [email protected] heroku-postbuild /tmp/build_e7159bee
   > NPM_CONFIG_PRODUCTION=false npm install --prefix client && npm run build --prefix client
   
   
   > [email protected] postinstall /tmp/build_e7159bee/client/node_modules/babel-runtime/node_modules/core-js
   > node -e "try{require('./postinstall')}catch(e){}"
   
   
   > [email protected] postinstall /tmp/build_e7159bee/client/node_modules/core-js
   > node -e "try{require('./postinstall')}catch(e){}"
   
   
   > [email protected] postinstall /tmp/build_e7159bee/client/node_modules/core-js-pure
   > node -e "try{require('./postinstall')}catch(e){}"
   
   added 1690 packages from 1077 contributors and audited 1703 packages in 62.777s
   
   78 packages are looking for funding
     run `npm fund` for details
   
   found 5 vulnerabilities (1 low, 4 high)
     run `npm audit fix` to fix them, or `npm audit` for details
   
   > [email protected] build /tmp/build_e7159bee/client
   > react-scripts build
   
   Creating an optimized production build...
   Failed to compile.
   
   /tmp/build_e7159bee/client/src/App.tsx
   TypeScript error in /tmp/build_e7159bee/client/src/App.tsx(1,34):
   Could not find a declaration file for module 'react'. '/tmp/build_e7159bee/client/node_modules/react/index.js' implicitly has an 'any' type.
     If the 'react' package actually exposes this module, consider sending a pull request to amend 'https://github.com/DefinitelyTyped/DefinitelyTyped/tree/master/types/react`  TS7016
   
     > 1 | import React, { useEffect } from 'react';
         |                                  ^
       2 | import AppNavbar from './components/AppNavbar';
       3 | import ShoppingList from './components/ShoppingList';
       4 | import ItemModal from './components/ItemModal';

npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! [email protected] build: react-scripts build
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the [email protected] build script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.
npm ERR! A complete log of this run can be found in:
npm ERR! /tmp/npmcache.o5qtJ/_logs/2021-01-22T22_42_26_188Z-debug.log
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! [email protected] heroku-postbuild: NPM_CONFIG_PRODUCTION=false npm install --prefix client && npm run build --prefix client
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the [email protected] heroku-postbuild script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.
npm ERR! A complete log of this run can be found in:
npm ERR! /tmp/npmcache.o5qtJ/_logs/2021-01-22T22_42_26_216Z-debug.log
-----> Build failed

   We're sorry this build is failing! You can troubleshoot common issues here:
   https://devcenter.heroku.com/articles/troubleshooting-node-deploys
   
   Some possible problems:
   
   - Node version not specified in package.json
     https://devcenter.heroku.com/articles/nodejs-support#specifying-a-node-js-version
   
   Love,
   Heroku

! Push rejected, failed to compile Node.js app.
! Push failed

[sayinmehmet47]

{

  "proxy": "http://127.0.0.1:5000"
}

use that instead localhost:5000