According to this burnup chart for the last 7-day sprint, what should the project lead discuss with the product owner and the team?

The burnup chart shows the "Total Scope" line increasing significantly after the sprint began, particularly around day 3 and day 5. This indicates that new work was added to the sprint backlog after the initial commitment, leading to scope creep. The "Work Completed" line, while showing progress, struggles to keep pace with the expanding scope. Therefore, the project lead should discuss with the product owner and team the implications of accepting too much work mid-sprint, as it can jeopardize sprint goals and team focus. The product owner can ask the team to change commitments, but the team needs to manage scope. The team is making progress, so it's not necessarily that they aren't meeting expectations, but rather that expectations are shifting. Stopping on day 4 and starting a new sprint is an extreme measure not supported by the chart; the team is still completing work.