error coming while running npm start

[Shivendra12131]

Starting the development server...

/Users/shivendra/Desktop/new_project/Hostel-Management/frontend/node_modules/react-scripts/scripts/start.js:19
throw err;
^

Error: error:0308010C:digital envelope routines::unsupported
at new Hash (node:internal/crypto/hash:68:19)
at Object.createHash (node:crypto:138:10)
at module.exports (/Users/shivendra/Desktop/new_project/Hostel-Management/frontend/node_modules/webpack/lib/util/createHash.js:135:53)
at NormalModule._initBuildHash (/Users/shivendra/Desktop/new_project/Hostel-Management/frontend/node_modules/webpack/lib/NormalModule.js:417:16)
at /Users/shivendra/Desktop/new_project/Hostel-Management/frontend/node_modules/webpack/lib/NormalModule.js:452:10
at /Users/shivendra/Desktop/new_project/Hostel-Management/frontend/node_modules/webpack/lib/NormalModule.js:323:13
at /Users/shivendra/Desktop/new_project/Hostel-Management/frontend/node_modules/loader-runner/lib/LoaderRunner.js:367:11
at /Users/shivendra/Desktop/new_project/Hostel-Management/frontend/node_modules/loader-runner/lib/LoaderRunner.js:233:18
at context.callback (/Users/shivendra/Desktop/new_project/Hostel-Management/frontend/node_modules/loader-runner/lib/LoaderRunner.js:111:13)
at /Users/shivendra/Desktop/new_project/Hostel-Management/frontend/node_modules/babel-loader/lib/index.js:59:103 {
opensslErrorStack: [ 'error:03000086:digital envelope routines::initialization error' ],
library: 'digital envelope routines',
reason: 'unsupported',
code: 'ERR_OSSL_EVP_UNSUPPORTED'
}

Node.js v21.1.0
shivendra@Shivendras-MacBook-Air frontend % node server.js
node:internal/modules/cjs/loader:1147
throw err;
^

Error: Cannot find module '/Users/shivendra/Desktop/new_project/Hostel-Management/frontend/server.js'
at Module._resolveFilename (node:internal/modules/cjs/loader:1144:15)
at Module._load (node:internal/modules/cjs/loader:985:27)
at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:135:12)
at node:internal/main/run_main_module:28:49 {
code: 'MODULE_NOT_FOUND',
requireStack: []
}

Node.js v21.1.0

[Abhigna-D]

go to your package.json and change "start": "react-scripts start" to "start": "react-scripts --openssl-legacy-provider start"

[anasaijaz]

Looks like some dependencies are still legacy?

[crysosancher]

npm run start

hostel-app@0.1.0 start
react-scripts --openssl-legacy-provider start

node:internal/modules/cjs/loader:596
throw e;
^

Error [ERR_PACKAGE_PATH_NOT_EXPORTED]: Package subpath './lib/tokenize' is not defined by "exports" in /home/cryso/Documents/Projects/mamaji/Hostel-Management/frontend/node_modules/postcss-safe-parser/node_modules/postcss/package.json
at exportsNotFound (node:internal/modules/esm/resolve:303:10)
at packageExportsResolve (node:internal/modules/esm/resolve:650:9)
at resolveExports (node:internal/modules/cjs/loader:589:36)
at Module._findPath (node:internal/modules/cjs/loader:666:31)
at Module._resolveFilename (node:internal/modules/cjs/loader:1128:27)
at Module._load (node:internal/modules/cjs/loader:983:27)
at Module.require (node:internal/modules/cjs/loader:1230:19)
at require (node:internal/modules/helpers:179:18)
at Object. (/home/cryso/Documents/Projects/mamaji/Hostel-Management/frontend/node_modules/postcss-safe-parser/lib/safe-parser.js:1:17)
at Module._compile (node:internal/modules/cjs/loader:1368:14) {
code: 'ERR_PACKAGE_PATH_NOT_EXPORTED'
}

Node.js v21.7.1