❌ Error: SQLSTATE[23000]: Integrity constraint violation: 1452 Cannot add or update a child row: a foreign key constraint fails (`tavitour_1`.`transfers`, CONSTRAINT `fk_transfers_created_by_users` FOREIGN KEY (`created_by`) REFERENCES `users` (`id`) ON DELETE RESTRICT ON UPDATE CASCADE)

=== Next Step ===
Test file upload with this transfer ID: test_receipt_20260920045439