Netlify not building - Command failed with exit code 1: npm run build

Hello kindly help I used the CI= npm run build. Am still getting this error I have also attached a screenshot of my json file.
1:13:52 PM: Build ready to start
1:13:54 PM: build-image version: 09c2cdcdf242cf2f57c9ee0fcad9d298fad9ad41
1:13:54 PM: build-image tag: v3.5.0
1:13:54 PM: buildbot version: daad1c7f6f985f432faa0e1d50982ae7149f9e0a
1:13:54 PM: Fetching cached dependencies
1:13:54 PM: Failed to fetch cache, continuing with build
1:13:54 PM: Starting to prepare the repo for build
1:13:55 PM: No cached dependencies found. Cloning fresh repo
1:13:55 PM: git clone https://github.com/ivy-ajanga/MyPortfolio
1:13:56 PM: Preparing Git Reference refs/heads/main
1:13:58 PM: Different publish path detected, going to use the one specified in the Netlify configuration file: ‘build’ versus ‘build/’ in the Netlify UI
1:13:58 PM: Starting build script
1:13:58 PM: Installing dependencies
1:13:58 PM: Python version set to 2.7
1:14:00 PM: v12.18.0 is already installed.
1:14:00 PM: Now using node v12.18.0 (npm v6.14.4)
1:14:01 PM: Started restoring cached build plugins
1:14:01 PM: Finished restoring cached build plugins
1:14:01 PM: Attempting ruby version 2.7.1, read from environment
1:14:02 PM: Using ruby version 2.7.1
1:14:03 PM: Using PHP version 5.6
1:14:03 PM: Started restoring cached node modules
1:14:03 PM: Finished restoring cached node modules
1:14:03 PM: Installing NPM modules using NPM version 6.14.4
1:14:06 PM: npm WARN MyPortfolio@1.0.0 No repository field.
1:14:06 PM: up to date in 2.646s
1:14:06 PM: found 0 vulnerabilities
1:14:06 PM: NPM modules installed
1:14:07 PM: Started restoring cached go cache
1:14:07 PM: Finished restoring cached go cache
1:14:07 PM: go version go1.14.4 linux/amd64
1:14:07 PM: go version go1.14.4 linux/amd64
1:14:07 PM: Installing missing commands
1:14:07 PM: Verify run directory
1:14:09 PM: ​
1:14:09 PM: ────────────────────────────────────────────────────────────────
1:14:09 PM: Netlify Build
1:14:09 PM: ────────────────────────────────────────────────────────────────
1:14:09 PM: ​
1:14:09 PM: ❯ Version
1:14:09 PM: @netlify/build 5.5.2
1:14:09 PM: ​
1:14:09 PM: ❯ Flags
1:14:09 PM: deployId: 5fc8ba6057cfa0ebb9716e6b
1:14:09 PM: mode: buildbot
1:14:09 PM: ​
1:14:09 PM: ❯ Current directory
1:14:09 PM: /opt/build/repo
1:14:09 PM: ​
1:14:09 PM: ❯ Config file
1:14:09 PM: No config file was defined: using default values.
1:14:09 PM: ​
1:14:09 PM: ❯ Context
1:14:09 PM: production
1:14:09 PM: ​
1:14:09 PM: ────────────────────────────────────────────────────────────────
1:14:09 PM: 1. Build command from Netlify app
1:14:09 PM: ────────────────────────────────────────────────────────────────
1:14:09 PM: ​
1:14:09 PM: $ CI= npm run build
1:14:09 PM: npm ERR! missing script: build
1:14:09 PM: npm ERR! A complete log of this run can be found in:
1:14:09 PM: npm ERR! /opt/buildhome/.npm/_logs/2020-12-03T10_14_09_428Z-debug.log
1:14:09 PM: ​
1:14:09 PM: ────────────────────────────────────────────────────────────────
1:14:09 PM: “build.command” failed
1:14:09 PM: ────────────────────────────────────────────────────────────────
1:14:09 PM: ​
1:14:09 PM: Error message
1:14:09 PM: Command failed with exit code 1: CI= npm run build
1:14:09 PM: ​
1:14:09 PM: Error location
1:14:09 PM: In Build command from Netlify app:
1:14:09 PM: CI= npm run build
1:14:09 PM: ​
1:14:09 PM: Resolved config
1:14:09 PM: build:
1:14:09 PM: command: CI= npm run build
1:14:09 PM: commandOrigin: ui
1:14:09 PM: publish: /opt/build/repo/build
1:14:09 PM: Caching artifacts
1:14:09 PM: Started saving node modules
1:14:09 PM: Finished saving node modules
1:14:09 PM: Started saving build plugins
1:14:09 PM: Finished saving build plugins
1:14:09 PM: Started saving pip cache
1:14:09 PM: Finished saving pip cache
1:14:09 PM: Started saving emacs cask dependencies
1:14:09 PM: Finished saving emacs cask dependencies
1:14:09 PM: Started saving maven dependencies
1:14:09 PM: Finished saving maven dependencies
1:14:09 PM: Started saving boot dependencies
1:14:09 PM: Finished saving boot dependencies
1:14:09 PM: Started saving go dependencies
1:14:09 PM: Finished saving go dependencies
1:14:12 PM: Build failed due to a user error: Build script returned non-zero exit code: 2
1:14:12 PM: Failing build: Failed to build site
1:14:12 PM: Failed during stage ‘building site’: Build script returned non-zero exit code: 2
1:14:12 PM: Finished processing build request in 17.979369755s