Jamroom Install on localhost
Installation and Configuration
Hi - Welcome to JamRoom.
Installation guide is here - https://www.jamroom.net/the-jamroom-network/documentation/getting-started/4603/quick-install-guide
Server Requirements here - https://www.jamroom.net/the-jamroom-network/documentation/getting-started/774/server-requirements
Jamroom does not run on Windows based servers so if you are running Xampp on a PC that could cause the issues you are having.
Try it on a Mac?