
Fix #104183: Error submitting job to flamenco manager. The bug happened when a user, using filesystem as storage solution, would try to submit the job to the flamenco manager. The user would be shown an Error -> Error packing with BAT: 'Packer' object has no attribute 'actual_checkout_path'. The fix was to account for multiple implementations of the Packer object. Reviewed-on: https://projects.blender.org/studio/flamenco/pulls/104184