# "build.command" failed on React app **URL:** \ **Category:** Support\ **Tags:** building, deployment\ **Created:** [January 10, 2023, 2:17pm UTC](https://answers.netlify.com/t/build-command-failed-on-react-app/82967 "2023-01-10T14:17:43Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![MyatThuKo](https://sea1.discourse-cdn.com/netlify/user_avatar/answers.netlify.com/myatthuko/32/44562_2.png) [@MyatThuKo](https://answers.netlify.com/u/MyatThuKo)\ **Post date:** [January 10, 2023, 2:17pm UTC](https://answers.netlify.com/t/build-command-failed-on-react-app/82967/1 "2023-01-10T14:17:43Z")
This is my first time using Netlify and I am trying to host one of my GitHub repo on Netlify. When I import the repo to the dashboard, I got the error message saying: ““build.command” failed” and this is the log. 9:13:26 AM: build-image version: a2d22d22e4555d1ef0a972ed14a0a4b366ad20c4 (focal) 9:13:26 AM: build-image tag: v4.16.3 9:13:26 AM: buildbot version: 0d92ba804851e1768a79721ec5ad312cd15c4ac9 9:13:26 AM: Fetching cached dependencies 9:13:26 AM: Starting to download cache of 104.6MB 9:13:27 AM: Finished downloading cache in 1.060066761s 9:13:27 AM: Starting to extract cache 9:13:29 AM: Finished extracting cache in 1.976437594s 9:13:29 AM: Finished fetching cache in 3.075633238s 9:13:29 AM: Starting to prepare the repo for build 9:13:29 AM: Preparing Git Reference refs/heads/main 9:13:30 AM: Parsing package.json dependencies 9:13:32 AM: Starting build script 9:13:32 AM: Installing dependencies 9:13:32 AM: Python version set to 2.7 9:13:32 AM: Started restoring cached Node.js version 9:13:33 AM: Finished restoring cached Node.js version 9:13:33 AM: v16.19.0 is already installed. 9:13:34 AM: Now using node v16.19.0 (npm v8.19.3) 9:13:34 AM: Enabling Node.js Corepack 9:13:34 AM: Started restoring cached build plugins 9:13:34 AM: Finished restoring cached build plugins 9:13:34 AM: Attempting Ruby version 2.7.2, read from environment 9:13:34 AM: Using Ruby version 2.7.2 9:13:35 AM: Using PHP version 8.0 9:13:35 AM: Started restoring cached corepack dependencies 9:13:35 AM: mv: cannot move ‘/opt/build/cache/.node/corepack’ to ‘/opt/buildhome/.node/corepack’: No such file or directory 9:13:35 AM: Finished restoring cached corepack dependencies 9:13:35 AM: No npm workspaces detected 9:13:35 AM: Started restoring cached node modules 9:13:35 AM: Finished restoring cached node modules 9:13:35 AM: Bypassing sha validation. Running pre & post install scripts 9:13:35 AM: Installing npm packages using npm version 8.19.3 9:13:38 AM: added 1 package, and audited 1470 packages in 3s 9:13:38 AM: 231 packages are looking for funding 9:13:38 AM: run `npm fund` for details 9:13:38 AM: 6 high severity vulnerabilities 9:13:38 AM: To address all issues (including breaking changes), run: 9:13:38 AM: npm audit fix --force 9:13:38 AM: Run `npm audit` for details. 9:13:38 AM: npm packages installed 9:13:38 AM: Started restoring cached go cache 9:13:38 AM: Finished restoring cached go cache 9:13:38 AM: go version go1.19.4 linux/amd64 9:13:38 AM: Detected 1 framework(s) 9:13:38 AM: “create-react-app” at version “5.0.1” 9:13:38 AM: Installing missing commands 9:13:38 AM: Verify run directory 9:13:38 AM: Section completed: initializing 9:13:40 AM: ​ 9:13:40 AM: Netlify Build 9:13:40 AM: ──────────────────────────────────────────────────────────────── 9:13:40 AM: ​ 9:13:40 AM: ❯ Version 9:13:40 AM: @netlify/build 29.4.1 9:13:40 AM: ​ 9:13:40 AM: ❯ Flags 9:13:40 AM: baseRelDir: true 9:13:40 AM: buildId: 63bd72847d8e6d0008198b11 9:13:40 AM: deployId: 63bd72847d8e6d0008198b13 9:13:40 AM: ​ 9:13:40 AM: ❯ Current directory 9:13:40 AM: /opt/build/repo 9:13:40 AM: ​ 9:13:40 AM: ❯ Config file 9:13:40 AM: No config file was defined: using default values. 9:13:40 AM: ​ 9:13:40 AM: ❯ Context 9:13:40 AM: production 9:13:40 AM: ​ 9:13:40 AM: 1. Build command from Netlify app 9:13:40 AM: ──────────────────────────────────────────────────────────────── 9:13:40 AM: ​ 9:13:40 AM: $ npm run build 9:13:40 AM: \> myat-portfolio-site@0.1.0 build 9:13:40 AM: \> react-scripts build 9:13:41 AM: Creating an optimized production build… 9:13:57 AM: 9:13:57 AM: Treating warnings as errors because process.env.CI = true. 9:13:57 AM: Most CI servers set it automatically. 9:13:57 AM: 9:13:57 AM: Failed to compile. 9:13:57 AM: 9:13:57 AM: [eslint] 9:13:57 AM: src/components/Experiences.js 9:13:57 AM: Line 27:29: img elements must have an alt prop, either with meaningful text, or an empty string for decorative images jsx-a11y/alt-text 9:13:57 AM: Line 38:29: img elements must have an alt prop, either with meaningful text, or an empty string for decorative images jsx-a11y/alt-text 9:13:57 AM: Line 49:29: img elements must have an alt prop, either with meaningful text, or an empty string for decorative images jsx-a11y/alt-text 9:13:57 AM: Line 62:29: img elements must have an alt prop, either with meaningful text, or an empty string for decorative images jsx-a11y/alt-text 9:13:57 AM: Line 73:29: img elements must have an alt prop, either with meaningful text, or an empty string for decorative images jsx-a11y/alt-text 9:13:57 AM: Line 84:29: img elements must have an alt prop, either with meaningful text, or an empty string for decorative images jsx-a11y/alt-text 9:13:57 AM: src/components/Profile.js 9:13:57 AM: Line 42:17: img elements must have an alt prop, either with meaningful text, or an empty string for decorative images jsx-a11y/alt-text 9:13:57 AM: ​ 9:13:57 AM: “build.command” failed 9:13:58 AM: Failed during stage ‘building site’: Build script returned non-zero exit code: 2 ([Search results for '"non-zero exit code: 2"' - Netlify Support Forums](https://ntl.fyi/exit-code-2)) 9:13:57 AM: ──────────────────────────────────────────────────────────────── 9:13:57 AM: ​ 9:13:57 AM: Error message 9:13:57 AM: Command failed with exit code 1: npm run build ([Search results for '"non-zero exit code: 1"' - Netlify Support Forums](https://ntl.fyi/exit-code-1)) 9:13:57 AM: ​ 9:13:57 AM: Error location 9:13:57 AM: In Build command from Netlify app: 9:13:57 AM: npm run build 9:13:57 AM: ​ 9:13:57 AM: Resolved config 9:13:57 AM: build: 9:13:57 AM: command: npm run build 9:13:57 AM: commandOrigin: ui 9:13:57 AM: publish: /opt/build/repo/build 9:13:57 AM: publishOrigin: ui 9:13:58 AM: Caching artifacts 9:13:58 AM: Started saving node modules 9:13:58 AM: Finished saving node modules 9:13:58 AM: Started saving build plugins 9:13:58 AM: Finished saving build plugins 9:13:58 AM: Started saving pip cache 9:13:58 AM: Finished saving pip cache 9:13:58 AM: Started saving emacs cask dependencies 9:13:58 AM: Finished saving emacs cask dependencies 9:13:58 AM: Started saving maven dependencies 9:13:58 AM: Finished saving maven dependencies 9:13:58 AM: Started saving boot dependencies 9:13:58 AM: Finished saving boot dependencies 9:13:58 AM: Started saving rust rustup cache 9:13:58 AM: Finished saving rust rustup cache 9:13:58 AM: Started saving go dependencies 9:13:58 AM: Finished saving go dependencies 9:13:58 AM: Build failed due to a user error: Build script returned non-zero exit code: 2 9:13:58 AM: Failing build: Failed to build site 9:13:58 AM: Finished processing build request in 32.083589332s ---
**Author:** ![clarnx](https://sea1.discourse-cdn.com/netlify/user_avatar/answers.netlify.com/clarnx/32/40777_2.png) [@clarnx](https://answers.netlify.com/u/clarnx)\ **Post date:** [January 10, 2023, 9:46pm UTC](https://answers.netlify.com/t/build-command-failed-on-react-app/82967/2 "2023-01-10T21:46:00Z")
Hi @MyatThuKo, kindly check the quoted errors below from your deploy log. > [@MyatThuKo](#): > > 9:13:57 AM: Line 27:29: img elements must have an alt prop, either with meaningful text, or an empty string for decorative images jsx-a11y/alt-text > 9:13:57 AM: Line 38:29: img elements must have an alt prop, either with meaningful text, or an empty string for decorative images jsx-a11y/alt-text > 9:13:57 AM: Line 49:29: img elements must have an alt prop, either with meaningful text, or an empty string for decorative images jsx-a11y/alt-text > 9:13:57 AM: Line 62:29: img elements must have an alt prop, either with meaningful text, or an empty string for decorative images jsx-a11y/alt-text > 9:13:57 AM: Line 73:29: img elements must have an alt prop, either with meaningful text, or an empty string for decorative images jsx-a11y/alt-text > 9:13:57 AM: Line 84:29: img elements must have an alt prop, either with meaningful text, or an empty string for decorative images jsx-a11y/alt-text > 9:13:57 AM: src/components/Profile.js > 9:13:57 AM: Line 42:17: img elements must have an alt prop, either with meaningful text, or an empty string for decorative images jsx-a11y/alt-text Images should have an alt property. You need to pass in a prop called alt to the image in the components located at `src/components/Experiences.js` and `src/components/Profile.js` Also, Alt tag is used by screen readers for visually impaired. Therefore it is considered as a good practice to always add a ALT tag to the image component. Let me know the outcome. Thanks.