I am trying to deploy on Amazon Linux 2024 and things work ok until I use a secure URL https rather than http, resulting in "No instance available”.

The error log for the secure virtual host shows:

sendBuffers(): send error: Invalid argument
[Fri Oct 18 10:28:45.863746 2024] [:error] [pid 9138:tid 9267] error sending request
[Fri Oct 18 10:28:45.863751 2024] [:error] [pid 9138:tid 9267] Failed to send request
[Fri Oct 18 10:28:45.865231 2024] [:error] [pid 9138:tid 9267] Request handling error: No instance available

However, I can connect via https with a Java Client application which also uses JavaMonitor / wotaskd to run up and select instances and that works.

If anyone has come across sendBuffers(): send error: Invalid argument, please let me know.

I am worried that the mod_WebObjects.so <http://mod_webobjects.so/> I built for graviton might be at fault, but I then can’t explain why the Java Client secure connection works fine.

The SSL certificates etc. should all be fine as they are copied from the current working live AL2 server and there are no errors relating to them.

Thanks
John