Some of your data is larger than xmax. The xmax parameter is the upper bound of the xmin search space. You could try increasing it. If the estimated values are below xmax, it's probably OK not to worry about this.


查看了官方文档，是xmax默认值太小。xmax默认值只有1e+05,在写参数的时候调大就好了。希望对后来者有帮助。