I wrote about this earlier in the comments, so I'll just copy and paste my answer here :0...
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According to recent news, this error is caused by the game's opening intro, so it's no longer present in version 0.4.0.
I didn't encounter this error in 0.3.0, but I suggest trying deleting the intro in your game folders (Lovedoll v0.3.0\Data\Video\)...
You can also contact our Discord server for assistance...