ch_PP-OCRv4_rec_distill.yml加载报错yaml.composer.ComposerError: found undefined alias 'max_text_length'

[futureflsl]

代码：
import os
import yaml

with open(r'C:\Users\Administrator\Desktop\PaddleOCR-release-2.7\configs\rec\ch_PP-OCRv4_rec_distill.yml','r') as f:
data = yaml.load(f,Loader=yaml.Loader)#更换yaml.FullLoader也不行

print(data)

报错：
raise ComposerError(None, None, "found undefined alias %r"
yaml.composer.ComposerError: found undefined alias 'max_text_length'

测试pyyaml版本：
5.4
6.0.1
报错均一样，自从v4加了*max_text_length这样表达就报错

[liuyajian]

yml第19行 改成 max_text_length: &max_text_length 25