fix psalm errors #64

	name: Psalm

	on:
	push:
	paths:
	- '**.php'
	- 'psalm.xml.dist'

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

	- name: Setup PHP
	uses: shivammathur/setup-php@v2
	with:
	php-version: '8.0'
	extensions: dom, curl, libxml, mbstring, zip, pcntl, pdo, sqlite, pdo_sqlite, bcmath, soap, intl, gd, exif, iconv, imagick
	coverage: none

	- name: Cache composer dependencies
	uses: actions/cache@v2
	with:
	path: vendor
	key: composer-${{ hashFiles('composer.lock') }}

	- name: Run composer install
	run: composer install -n --prefer-dist

	- name: Run psalm
	run: ./vendor/bin/psalm --output-format=github

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