Fatal error: Uncaught Error: Undefined constant "VENDOR_DIR" in /home/myclienteu/croix-souris/vendor/wp-cli/package-command/tests/ComposerJsonTest.php:8 Stack trace: #0 {main} thrown in /home/myclienteu/croix-souris/vendor/wp-cli/package-command/tests/ComposerJsonTest.php on line 8