Summary: Seems to be broken with PHP v8.

Test Plan: arc commands should work

Reviewers: michelle, zasgar

Reviewed By: michelle
Signed-off-by: Vihang Mehta <vihang@pixielabs.ai>

Differential Revision: https://phab.corp.pixielabs.ai/D10235

GitOrigin-RevId: 6700246e8a9b255c13fb3e460ea0586a8326f9ed