Why are Pathirana and Mayank Agarwal not playing in SRH vs CSK?

In match 18 of the IPL 2024, the Pat Cummins-led SunRisers Hyderabad (SRH) are hosting defending champions Chennai Super Kings (CSK) at the Rajiv Gandhi International Stadium in Hyderabad on Friday, April 5. While the SRH are without Mayank Agarwal, the CSK are missing the services of Matheesha Pathirana. While Agarwal is unwell, Pathirana is suffering from a niggle.