[BUG] Saving a Song Variation Highscore crashes the game

[TechnikTil]

What version of the engine are you using?

Version: v1.0.1

Which target are you using?

• Windows
• Linux
• Mac

Explain your issue

The Game crashes when getting a new Highscore (or finishing any song at all since old highscores perished)
This is probably because Serializer's format isn't built for fields. (Notice the commas and colons in the error)

^{_{would make a PR but im like
lazy}}