The retrospective meeting is a key practice in agile methodology that allows the team to inspect and adapt their processes and performance after each iteration. The retrospective meeting helps the team to identify what went well, what went wrong, and what can be improved in the next iteration. By using the retrospective meeting, the project manager can facilitate a collaborative and constructive discussion with the team to find out the root cause of the quality issues and devise a plan to fix them. The plan may include actions such as implementing better engineering practices, enhancing communication and collaboration, increasing testing coverage, or applying feedback from customers and stakeholders. The retrospective meeting also helps the team to learn from their mistakes, celebrate their successes, and foster a culture of continuous improvement123. References: = PMBOK Guide, Sixth Edition, pages 28-29, 50-51; Agile Practice Guide, pages 33-34, 62-63; How to Run an Agile Retrospective Meeting with Examples.