Fix PHP check

.github/workflows/main.yml

@@ -10,6 +10,10 @@ jobs:
     - uses: actions/checkout@v1
     - name: Install dependencies
       run: composer install --prefer-dist --no-progress --no-suggest
+    - name: Prepare
+      run: |
+        cp .env.example .env
+        php artisan key:generate
     - name: Validate Twig templates
       run: php artisan twig:lint -v
   frontend: