A bad YAML file... please help me fix it!

bad_yaml.yml

name:Validate Data

on:
  push: pull_request:

jobs:
  validate-data:
    runs-on:ubuntu-latest
    steps:
    	- uses:actions/checkout@v2

      - uses: actions/setup-node@v2
        with:
          node-version: "12"

    	- name: Validate workflows   run: |
          npm ci
          npx ts-node-script ./index.ts
        working-directory: ./script/validate-data