Splunk HTTP Event Collector - HTTP Integration

Hi, Im trying to set up HTTP integration in ChirpStack to forward json data into Splunk via the HTTP Event Collector, however when the data is sent, Splunk reports "ERROR HttpInputDataHandler… reply=5… parsing_err=“No data” "

I’ve been logging the data sent to the Splunk server from the Chirpstack server with wireshark. If i pull the JSON data and URI from each packet, and send that to Splunk via CURL instead, it imports just fine and i get a Success response back from Splunk.

Has anyone had a similar issue in the past? I’ve found essentially nothing on a Chirpstack/Splunk stack out there.