Could not proxy reques - node.js

Question

Proxy error: Could not proxy request /api/profile/all from localhost:3000 to http://localhost:5000. [1] See https://nodejs.org/api/errors.html#errors_common_system_errors for more information (ECONNRESET)
Hi I was wondering if anyone knows the solution to this problem. The application was working just fine yesterday, but today it started raising this error up. Please I desperately need help. I have to finish this project before the 5th of February.
//package.json(Node)
{
"name": "devconnector",
"version": "1.0.0",
"description": "Social network for developers",
"main": "server.js",
"scripts": {
"client-install": "npm install --prefix client",
"start": "node server.js",
"server": "nodemon server.js",
"client": "npm start --prefix client",
"dev": "concurrently \"npm run client\" \"npm run server\""
},
"author": "Brad Traversy",
"license": "MIT",
"dependencies": {
"bcryptjs": "^2.4.3",
"body-parser": "^1.18.2",
"concurrently": "^3.5.1",
"express": "^4.16.3",
"gravatar": "^1.6.0",
"jsonwebtoken": "^8.2.0",
"moment": "^2.24.0",
"mongoose": "^5.0.12",
"npm": "^6.5.0",
"passport": "^0.4.0",
"passport-jwt": "^4.0.0",
"validator": "^9.4.1"
},
"devDependencies": {
"nodemon": "^1.17.3"
}
}
//package.json(React)
{
"name": "client",
"version": "0.1.0",
"private": true,
"dependencies": {
"#fortawesome/fontawesome": "^1.1.8",
"#fortawesome/react-fontawesome": "^0.1.3",
"axios": "^0.18.0",
"classnames": "^2.2.5",
"jwt-decode": "^2.2.0",
"moment": "^2.22.0",
"react": "^16.3.1",
"react-dom": "^16.3.1",
"react-html-table-to-excel": "^2.0.0",
"react-moment": "^0.7.0",
"react-redux": "^5.0.7",
"react-router-dom": "^4.2.2",
"react-scripts": "1.1.4",
"react-table": "^6.8.6",
"reactstrap": "^7.0.2",
"redux": "^3.7.2",
"redux-thunk": "^2.2.0"
},
"scripts": {
"start": "react-scripts start",
"build": "react-scripts build",
"test": "react-scripts test --env=jsdom",
"eject": "react-scripts eject"
},
"proxy": "http://localhost:5000"
}