wrapper fails with obscure error message if `terraform validate` is killed

Our GitHub Action performing `terraform validate` fails with an obscure error message on a commit it previously validated successfully:

Run terraform validate -no-color
/home/runner/work/_temp/12cb240b-5a9f-44d7-9df4-0c2e0c97750d/terraform-bin validate -no-color
/home/runner/work/_temp/12cb240b-5a9f-44d7-9df4-0c2e0c97750d/terraform:4211
core.setOutput('exitcode', exitCode.toString(10));
^

TypeError: Cannot read properties of null (reading 'toString')
at /home/runner/work/_temp/12cb240b-5a9f-44d7-9df4-0c2e0c97750d/terraform:4211:39
Error: Process completed with exit code 1.

Here is our `.github/workflows/terraform_pr.yml`:

name: Terraform PR Check

on: [pull_request]

jobs:
terraform:
runs-on: ubuntu-latest
steps:
- name: Checkout
uses: actions/checkout@v2

- name: HashiCorp - Setup Terraform
uses: hashicorp/setup-terraform@v2
with:
terraform_version: 1.3.4

- name: Terraform fmt
id: fmt
run: terraform fmt -check -recursive

- name: Terraform Init
id: init
run: terraform init -backend=false

- name: Terraform Validate
id: validate
run: terraform validate -no-color

Disabling the wrapper script with

uses: hashicorp/setup-terraform@v2
with:
terraform_version: 1.3.4
terraform_wrapper: false

and re-running the job led to this error message:

Run terraform validate -no-color
/home/runner/work/_temp/0bb3bce2-0453-4b29-9ccb-19976a647ace.sh: line 1: 1683 Killed terraform validate -no-color
Error: Process completed with exit code 137.

Therefore, I believe the error message presented above is caused by `terraform` being killed.
Is it possible to detect this and improve the error message?