You are working on a critical project for a large enterprise. The project has a major milestone delivery next week and is in the final testing phase. The project team is working on two critical showstopper bugs which are integral components of the deliverables. One of the senior members of the project has submitted his resignation and an outsourced component which is also scheduled for delivery next week may be delayed. Additionally, the current performance indices are: CPI 1.09 and SPI is 1.90. What is the MOST critical issue faced by the project?