Map01 NullReferenceExceptions
Did you run the Map01 scene and get Null Reference Exceptions?
Close the Map01 scene and run the Game scene. The Map01 scene is for enemy battle maps and takes data from the Game scene to initiate. If you try running the Map01 scene by itself, you'll get the NullReferenceExceptions errors as seen in the screenshot below.
Map01 scene NullReferenceExceptions on open. Run the Game scene instead.
How to fix
Play the Game scene instead.
Run the Game scene instead, not the Map01 scene. Map01 will give you NullReferenceExceptions errors about Helios and SaveLoadBattle on start because this scene not meant to run first - but rather called from the Game scene which controls all of the gameplay and settings.
Just want to test battles?
Follow the PvP Battle Matchmaking > Battle Testing with TransData documentation page instructions to learn how you can run the Map01 scene without errors by activating the TransData item in the Map01 hierarchy which feeds in artificial information to the battle map generator.
Updated less than a minute ago