fix NPE for the async thread ESACPE-1800 #206

	# This workflow will build a .NET project
	# For more information see: https://docs.github.com/en/actions/automating-builds-and-tests/building-and-testing-net

	name: .NET

	on:
	push:
	branches: [ "develop" ]
	pull_request:
	branches: [ "develop" ]

	jobs:
	build:

	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v3
	- name: Setup .NET
	uses: actions/setup-dotnet@v3
	with:
	global-json-file: global.json
	- name: Install dependencies (hdf5)
	run: sudo apt install hdf5-tools -y
	- name: Restore dependencies
	run: dotnet restore src/
	- name: Build
	run: dotnet build --no-restore src/
	- name: Test
	run: dotnet test --no-build --verbosity normal --collect:"XPlat Code Coverage" --settings:src/coverlet.runsettings --results-directory:TestResults src/
	- uses: codecov/codecov-action@v1
	with:
	directory: TestResults
	fail_ci_if_error: false # optional (default = false)
	verbose: true # optional (default = false)
	flags: unittests
	name: .NET Test Coverage
	- name: Upload test results
	uses: actions/upload-artifact@v2
	with:
	name: dotnet-results
	path: TestResults
	# Use always() to always run this step to publish test results when there are test failures
	if: ${{ always() }}

Provide feedback