[FIX] Feature importance when using only hist_exog in TFT fails #1535

	name: CI

	on:
	push:
	branches: [main]
	pull_request:
	branches: [main]

	defaults:
	run:
	shell: bash -l {0}

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

	jobs:
	run-tests:
	runs-on: ${{ matrix.os }}
	strategy:
	fail-fast: false
	matrix:
	os: [ubuntu-latest, macos-13, windows-latest]
	python-version: ['3.8', '3.9', '3.10', '3.11']
	exclude:
	- os: windows-latest
	python-version: '3.11'
	env:
	AWS_ACCESS_KEY_ID: ${{ secrets.AWS_ACCESS_KEY_ID_NIXTLA_TMP }}
	AWS_SECRET_ACCESS_KEY: ${{ secrets.AWS_SECRET_ACCESS_KEY_NIXTLA_TMP }}
	steps:
	- name: Clone repo
	uses: actions/checkout@d632683dd7b4114ad314bca15554477dd762a938 # v4.2.0

	- name: Set up environment
	uses: mamba-org/setup-micromamba@f8b8a1e23a26f60a44c853292711bacfd3eac822 # v1.9.0
	with:
	environment-file: environment-cpu.yml
	create-args: python=${{ matrix.python-version }}
	cache-environment: true

	- name: Install pip requirements
	run: pip install ./

	- name: Tests
	run: nbdev_test --do_print --timing --n_workers 0 --flags polars

Provide feedback