すみません、ログでエラー出てました。
[ERROR] java.lang.NullPointerException
[ERROR] at com.live2d.cubism.doc.model.exporter.cy.a(Unknown Source)
[ERROR] at com.live2d.cubism.doc.model.exporter.b$a.a(Unknown Source)
[ERROR] at com.live2d.cubism.doc.model.exporter.b$a.a(Unknown Source)
[ERROR] at com.live2d.cubism.doc.model.exporter.c.a(Unknown Source)
[ERROR] at com.live2d.cubism.doc.model.exporter.c.invoke(Unknown Source)
[ERROR] at com.live2d.util.ab.a(Unknown Source)
[ERROR] at com.live2d.util.aa.a(Unknown Source)
[ERROR] at java.base/java.lang.Thread.run(Unknown Source)