If you started the SpacialOS GDK for Unreal example 'round about February 11th you may be seeing issues with players spawning without weapons, which makes things difficult to test.
This seems to be caused by recent changes to 4.20-SpacialOSUnrealGDK branch cloned in section 2 step 2. It looks like the tutorial hasnt been updated to take those into account.
You can fix it by switching the branch to 4.20-SpacialOSUnrealGDK-release before you build the engine. Or waiting until the tutorial is updated. Or be a keener and figure out the needed Authority changes to fix it.