Splunk Docker container behind NGINX proxy - JSON error

[DanielleM]

I am trying to use Splunk in a docker container behind an NGINX proxy. It is working for the most part but I get error when trying to upload lookup files or modify any server settings -

"Your entry was not saved. The following error was reported: SyntaxError: Unexpected token < in JSON at position 0."

Has anyone seen this before or have experience working with Splunk behind NGINX proxy?

Note: I have web.conf configured with "root_endpoint = /splunk"

Thanks!

[DanielleM]

I never quite figured this out but found that keeping splunk as the root / in NGINX instead of /splunk fixed the problem.