Github Action - calling different repo

We are using Github action from a REPO which internally calling another repo to create a resource. But we are getting the below exception as shown in the image. Also, below is my action.

jobs:
  plan:
    name: "TF Plan"
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v2.3.1
      - uses: webfactory/ssh-agent@v0.4.1
        with:
          ssh-private-key: ${{ secrets.GIT_SERVICE_ACCOUNT_SSH_KEY }}

      - name: Setup Terraform
        uses: hashicorp/setup-terraform@v1.2.1
        with:
          terraform_version: 0.13.4

      - name: Terraform Init
        id: init
        working-directory: ./terraform/deployments/${{ env.SUBSCRIPTION_NAME }}
        run: terraform init -no-color -input=false -backend-config="key=${{ env.REMOTE_STATE_KEY_NAME }}"

      - name: Terraform Plan (no lock)
        if: github.event_name != 'pull_request'
        working-directory: ./terraform/deployments/${{ env.SUBSCRIPTION_NAME }}
        run: terraform plan -no-color -input=false -lock=false

      - name: Terraform Plan (with lock)
        if: github.event_name == 'pull_request'
        id: plan
        working-directory: ./terraform/deployments/${{ env.SUBSCRIPTION_NAME }}
        run: terraform plan -no-color -input=false -out=tf_plan_${{ env.SUBSCRIPTION_NAME }}_${{ github.sha }}