你好
ddddocr==1.5.5 安装失败了
pip show ddddocr==1.5.5
WARNING: Package(s) not found: ddddocr==1.5.5
这个如何解决哦，安装1.0.6 版本使用不起

python app/main.py
Traceback (most recent call last):
File "D:\Python\ddddocr-fastapi\app\main.py", line 5, in
from .models import OCRRequest, SlideMatchRequest, DetectionRequest, APIResponse
ImportError: attempted relative import with no known parent package