Why can I not update Splunk Add-on for Unix and Linux and getting an error?

[mlgroms]

Hi there, I am using REHL 8.6 x86_64 (0otpa) / Kernel 4.18.0 and trying to update Splunk Add-on for Unix and Linux...I am getting this error - An error occurred while downloading the app
An error occurred while downloading the app: [HTTP 404] https://127.0.0.1:8089/services/apps/local/Splunk_TA_nix/update; [{'type': 'ERROR', 'code': None, 'text': 'Error downloading update from https://splunkbase.splunk.com/app/833/release/8.6.0/download/?origin=cfu: Not Found'}]

When I manually tried to download from this link, - https://splunkbase.splunk.com/app/833/release/8.6.0/download/?origin=cfu - I am getting Oops! 404 Error: Page not found.

Please share your thoughts on how to update linux / unix app from the Splunk console

[mlgroms]

Thanks @richgalloway I did try and update to the version 8.7.0 (screenshot attached). When I tried to setup the app, I am getting error "This Server is not running a known Unix or Linux OS. Install this add-on on Unix or Linux systems only" even though I have REHL 8.6 x86_64 (0otpa) / Kernel 4.18.0...please share a work around. 

[richgalloway]

I don't have a workaround for that.  Sorry.

[richgalloway]

Try one of the newer releases of the app (8.5.0 or 8.7.0) as those are the only ones I see on splunkbase.  Version 8.3.3 may have been removed.