GSheet refuses to output bundle

Something really baffling here, I have a webhook setup that receives data from voiceflow into make.com then uses that data to search row in GSheet so that it can return data back to voiceflow. Webhook works fine but GSheet refuses to return any bundle when there is definitely data in the GSheet im querying. Hoping someone can identify why this is happening

@Strm
What happens when the toString function is applied to an email address specified in the Filter of the Search Rows module?