I was able to replicate your issue; this is happening because there is an error in the indentation of your YAML file. You need to add an extra tab in all the lines after the “git:” line:
This is because “PHP” is an invalid file format; please look at the multiple PHP file_format options we have available in our documentation. I consider your file can use “PHP_ARRAY” as the file_format option.
After this, you will see a new error (I promise this is the last one!):