参考一下其他的文档，应该是输入的内容不正确，如果不行去查看一下issue

再试试了。

看看这个有没帮助

https://www.paddlepaddle.org.cn/documentation/docs/zh/guides/02_paddle2.0_develop/08_model_save_load_cn.html

静态图还可以用 paddle.static.save_inference_model 试试

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