(tested on Ibexa Experience v3.3.27)

• create file my_dir/test/test.yaml in project directory
• run php bin/console  ibexa:migrations:kaliop:bulk-convert --recursive my_dir/

Result:

In BulkConvertCommand.php line 293:                                                          
ltrim() expects parameter 1 to be string, bool given  

Expected Result:
Command should run correct - no matter if inputdir is given with or without trailing slash