storage_backend/storage_image_backend_migration/security/ir.model.access.csv

1	id	name	model_id:id	group_id:id	perm_read	perm_write	perm_create	perm_unlink
2	access_storage_image_backend_migration_wizard	access_storage_image_backend_migration_wizard	model_storage_image_backend_migration_wizard		1	1	1	1