Game crashes when I save a chart while the song is still playing (in chart mode)

[githubisveryepic]

Describe your bug here.

the title says it all
like seriously
it says something about bf.json
even if BJ.SON
IS IN
THE FUCKING MOD

Command Prompt/Terminal logs (if existing)

No response

Are you modding a build from source or with Lua?

Lua

What is your build target?

Windows

Did you edit anything in this build? If so, mention or summarize your changes.

no