你好，感觉反馈，可以参考这个pr进行修复：https://github.com/PaddlePaddle/PaddleOCR/pull/7586/files

[liuchong540]

Traceback (most recent call last): File "tools/export_model.py", line 289, in main() File "tools/export_model.py", line 284, in main export_single_model( File "tools/export_model.py", line 74, in export_single_model shape=[None] + input_shape, dtype="float32"), TypeError: can only concatenate list (not "NoneType") to list

请问这个应该怎样解决啊

[UserWangZz]

可以检查一下，拼接操作的变量是否正常，可能有未实例化的对象

[zhangyubo0722]

麻烦提供一下复现命令吧