fixed crash when attempting to group a mod that no longer exists #791

	name: Main

	on:
	push:
	branches: [ master ]
	pull_request:
	branches: [ master ]
	workflow_dispatch:

	concurrency:
	group: ${{ github.workflow }}-${{ github.ref }}
	cancel-in-progress: true

	jobs:
	build:
	runs-on: windows-latest

	strategy:
	matrix:
	dotnet-version: [ 6.0.x ]

	steps:
	- uses: actions/checkout@v4
	with:
	submodules: "recursive"

	- name: Use Node.js
	uses: actions/setup-node@v4
	with:
	node-version: '18.17.1'
	cache: "yarn"

	- name: Install dependencies
	run: yarn --frozen-lockfile --network-timeout 600000 install

	- name: Print debug info
	run: dotnet --info

	- name: Build
	run: yarn build

	- name: Test
	run: yarn test

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