HarmonyOS 使用动画崩溃，请问如何调整

animateTo({ 
  duration: 150, 
  curve: curves.springMotion(), 
}, () => { 
  this.lines = -1; // 使得设置的最大行属性无效 
})
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.maxLines(this.lines) 
Reason:Signal:SIGSEGV(SEGV_MAPERR)@0x0000000000000010   
probably caused by NULL pointer dereference
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