Server process started correctly but did not call InitSDK() or ProcessReady() within 5 minutes.

I managed to successfully upload one server, and create a fleet for it. However, when I repeated the process to create a second server. The fleet gets stuck on activating before returning error. I get: "Server process started correctly but did not call InitSDK() or ProcessReady() within 5 minutes, launchPath(/local/game/TemplateAWS/Binaries/Linux/TemplateAWSServer), arguments(null), instanceId(i-0f4c8dcb19893e9..." In the events log. If it helps, the reason the first server kept returning error was because I didn't have my project and my engine in different partitions to cross-compile for Linux. And, the path I used for my fleet path, IS correct, as it is exactly the same as the previous path. No idea how to find out what's wrong.