Also I have some warnings
yarn install v1.22.19
info No lockfile found.
[1/4] Resolving packages...
warning [email protected]: babel-eslint is now @babel/eslint-parser. This package will no longer receive updates.
warning react-google-maps > babel-runtime > [email protected]: core-js@<3.23.3 is no longer maintained and not recommended for usage due to the number of issues. Because of the V8 engine whims, feature detection in old core-js versions could cause a slowdown up to 100x even if nothing is polyfilled. Some versions have web compatibility issues. Please, upgrade your dependencies to the actual version of core-js.
warning react-google-maps > recompose > fbjs > [email protected]: core-js@<3.23.3 is no longer maintained and not recommended for usage due to the number of issues. Because of the V8 engine whims, feature detection in old core-js versions could cause a slowdown up to 100x even if nothing is polyfilled. Some versions have web compatibility issues. Please, upgrade your dependencies to the actual version of core-js.
warning react-scripts > [email protected]: babel-eslint is now @babel/eslint-parser. This package will no longer receive updates.
warning react-scripts > [email protected]: This loader has been deprecated. Please use eslint-webpack-plugin
warning react-scripts > [email protected]: please switch to a stable version
warning react-scripts > [email protected]: "Please update to latest v2.3 or v2.2"
warning react-scripts > webpack-dev-server > [email protected]: Chokidar 2 does not receive security updates since 2019. Upgrade to chokidar 3 with 15x fewer dependencies
warning react-scripts > webpack-dev-server > chokidar > [email protected]: The v1 package contains DANGEROUS / INSECURE binaries. Upgrade to safe fsevents v2
warning react-scripts > babel-jest > @jest/transform > jest-haste-map > [email protected]: The v1 package contains DANGEROUS / INSECURE binaries. Upgrade to safe fsevents v2
warning react-scripts > @svgr/webpack > @svgr/plugin-svgo > [email protected]: This SVGO version is no longer supported. Upgrade to v2.x.x.
warning react-scripts > jest-environment-jsdom-fourteen > jsdom > [email protected]: Use your platform's native performance.now() and performance.timeOrigin.
warning react-scripts > jest-environment-jsdom-fourteen > jsdom > [email protected]: request-promise-native has been deprecated because it extends the now deprecated request package, see https://github.com/request/request/issues/3142
warning react-scripts > jest-environment-jsdom-fourteen > jsdom > [email protected]: request has been deprecated, see https://github.com/request/request/issues/3142
warning react-scripts > webpack-dev-server > url > [email protected]: The querystring API is considered Legacy. new code should use the URLSearchParams API instead.
warning react-scripts > webpack-dev-server > webpack-log > [email protected]: Please upgrade to version 7 or higher. Older versions may use Math.random() in certain circumstances, which is known to be problematic. See https://v8.dev/blog/math-random for details.
warning react-scripts > webpack-dev-server > sockjs > [email protected]: Please upgrade to version 7 or higher. Older versions may use Math.random() in certain circumstances, which is known to be problematic. See https://v8.dev/blog/math-random for details.
warning react-scripts > jest-environment-jsdom-fourteen > jsdom > request > [email protected]: Please upgrade to version 7 or higher. Older versions may use Math.random() in certain circumstances, which is known to be problematic. See https://v8.dev/blog/math-random for details.
warning react-scripts > workbox-webpack-plugin > workbox-build > @hapi/[email protected]: Switch to 'npm install joi'
warning react-scripts > babel-jest > @jest/transform > jest-haste-map > [email protected]: some dependency vulnerabilities fixed, support for node < 10 dropped, and newer ECMAScript syntax/features added
warning react-scripts > @svgr/webpack > @svgr/plugin-svgo > svgo > [email protected]: Modern JS already guarantees Array#sort() is a stable sort, so this library is deprecated. See the compatibility table on MDN: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/sort#browser_compatibility
warning react-scripts > jest > jest-cli > jest-config > jest-environment-jsdom > jsdom > [email protected]: request has been deprecated, see https://github.com/request/request/issues/3142
warning react-scripts > jest > jest-cli > jest-config > jest-environment-jsdom > jsdom > [email protected]: request-promise-native has been deprecated because it extends the now deprecated request package, see https://github.com/request/request/issues/3142
warning react-scripts > jest > jest-cli > jest-config > jest-environment-jsdom > jsdom > [email protected]: Use your platform's native performance.now() and performance.timeOrigin.
warning react-scripts > webpack > watchpack > watchpack-chokidar2 > [email protected]: Chokidar 2 does not receive security updates since 2019. Upgrade to chokidar 3 with 15x fewer dependencies
warning react-scripts > jest-environment-jsdom-fourteen > jsdom > request > [email protected]: this library is no longer supported
warning react-scripts > postcss-preset-env > postcss-color-functional-notation > postcss-values-parser > [email protected]: flatten is deprecated in favor of utility frameworks such as lodash.
warning react-scripts > optimize-css-assets-webpack-plugin > cssnano > cssnano-preset-default > postcss-svgo > [email protected]: This SVGO version is no longer supported. Upgrade to v2.x.x.
warning react-scripts > resolve-url-loader > rework > css > [email protected]: Please see https://github.com/lydell/urix#deprecated
warning react-scripts > resolve-url-loader > rework > css > [email protected]: See https://github.com/lydell/source-map-resolve#deprecated
warning react-scripts > babel-jest > @jest/transform > micromatch > snapdragon > [email protected]: See https://github.com/lydell/source-map-resolve#deprecated
warning react-scripts > resolve-url-loader > rework > css > source-map-resolve > [email protected]: Please see https://github.com/lydell/urix#deprecated
warning react-scripts > workbox-webpack-plugin > workbox-build > @hapi/joi > @hapi/[email protected]: Moved to 'npm install @sideway/address'
warning react-scripts > workbox-webpack-plugin > workbox-build > @hapi/joi > @hapi/[email protected]: This version has been deprecated and is no longer supported or maintained
warning react-scripts > workbox-webpack-plugin > workbox-build > @hapi/joi > @hapi/[email protected]: This version has been deprecated and is no longer supported or maintained
warning react-scripts > workbox-webpack-plugin > workbox-build > @hapi/joi > @hapi/topo > @hapi/[email protected]: This version has been deprecated and is no longer supported or maintained
warning react-scripts > workbox-webpack-plugin > workbox-build > @hapi/joi > @hapi/[email protected]: This version has been deprecated and is no longer supported or maintained
warning react-scripts > jest > jest-cli > jest-config > jest-environment-jsdom > jsdom > [email protected]: use String.prototype.padStart()
warning react-scripts > resolve-url-loader > rework > css > source-map-resolve > [email protected]: https://github.com/lydell/resolve-url#deprecated
warning react-scripts > resolve-url-loader > rework > css > source-map-resolve > [email protected]: See https://github.com/lydell/source-map-url#deprecated
warning react-syntax-highlighter > [email protected]: Support has ended for 9.x series. Upgrade to @latest
warning react-syntax-highlighter > lowlight > [email protected]: Version no longer supported. Upgrade to @latest
[2/4] Fetching packages...
[3/4] Linking dependencies...
warning " > @mui/[email protected]" has unmet peer dependency "styled-components@^5.3.1".
warning " > @mui/[email protected]" has incorrect peer dependency "react@^17.0.0".
warning " > @mui/[email protected]" has unmet peer dependency "@mui/system@^5.4.1".
warning " > @mui/[email protected]" has unmet peer dependency "@mui/system@^5.4.1".
warning " > [email protected]" has incorrect peer dependency "react@^16.4.0 || ^17.0.0".
warning " > [email protected]" has unmet peer dependency "react-router@^4.3.1 || ^5.0.0".
warning " > [email protected]" has unmet peer dependency "webpack@^4.0.0".
warning " > [email protected]" has unmet peer dependency "@typescript-eslint/[email protected]".
warning " > [email protected]" has unmet peer dependency "@typescript-eslint/[email protected]".
warning " > [email protected]" has unmet peer dependency "[email protected] || 4.x".
warning " > [email protected]" has unmet peer dependency "[email protected]".
warning " > [email protected]" has unmet peer dependency "[email protected]".
warning " > [email protected]" has unmet peer dependency "[email protected]".
warning " > [email protected]" has unmet peer dependency "[email protected] || 2.x".
warning " > [email protected]" has unmet peer dependency "webpack@^4.0.0".
warning "mui-datatables > [email protected]" has incorrect peer dependency "react@^17.0.0".
warning "mui-datatables > [email protected]" has incorrect peer dependency "react-dom@^17.0.0".
warning " > [email protected]" has unmet peer dependency "@types/googlemaps@^3.0.0".
warning " > [email protected]" has unmet peer dependency "@types/markerclustererplus@^2.1.29".
warning " > [email protected]" has incorrect peer dependency "@types/react@^15.0.0 || ^16.0.0".
warning " > [email protected]" has incorrect peer dependency "react@^15.0.0 || ^16.0.0".
warning " > [email protected]" has incorrect peer dependency "react-dom@^15.0.0 || ^16.0.0".
warning "react-google-maps > [email protected]" has incorrect peer dependency "react@^0.14.0 || ^15.0.0 || ^16.0.0".
warning " > [email protected]" has unmet peer dependency "webpack@^4.0.0".
warning " > [email protected]" has incorrect peer dependency "react@^0.14.9 || ^15.3.0 || ^16.0.0-rc || ^16.0".
warning " > [email protected]" has incorrect peer dependency "react-dom@^0.14.9 || ^15.3.0 || ^16.0.0-rc || ^16.0".
warning " > [email protected]" has incorrect peer dependency "react@^15.3.0 || ^16.0.0 || ^17.0.0".
warning "react-swipeable-views > react-swipeable-views-utils > [email protected]" has incorrect peer dependency "react@^16.3.0".
warning " > @testing-library/[email protected]" has unmet peer dependency "@testing-library/dom@>=7.21.4".
After that, The template answer me:
yarn run v1.22.19
$ cross-env REACTAPPBACKEND=false react-scripts start
/bin/sh: 1: cross-env: not found
error Command failed with exit code 127.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.
I dont't now what is the problem.
Please, help me
