Apollo Find People at Company Returns 502 Errors: Possible Causes?

Hey Team, I've got a list of companies and titles and I'm trying to enrich it with Apollo using the prebuilt "Find people at Company" function but it returning more than half 502 errors. Any idea why that might be? Is that a Clay issue or a Apollo issue? Below is a link to the table. https://app.clay.com/workspaces/149722/tables/t_Q57B2Br5EdW6/views/gv_GwCbPxtVm6hP