Fixes error when req_data is an empty list.

[patemotter]

Description

Code would throw error if the req_data var was an empty list and not checking it.

Tests

Local unit tests and e2e benchmarks

Checklist

Before submitting this PR, please make sure (put X in square brackets):

• I have performed a self-review of my code.
• I have necessary comments in my code, particularly in hard-to-understand areas.
• I have made or will make corresponding changes to any relevant documentation.