cv2.dnn read model error:

D:\ProgramData\Miniconda3\python.exe D:/project/detect/face/yolov5-face-landmarks-opencv/main_new.py
[ERROR:0] global C:\Users\appveyor\AppData\Local\Temp\1\pip-req-build-oduouqig\opencv\modules\dnn\src\onnx\onnx_importer.cpp (1878) cv::dnn::dnn4_v20201117::ONNXImporter::handleNode DNN/ONNX: ERROR during processing node with 2 inputs and 1 outputs: [Add]:(430)
Traceback (most recent call last):
  File "D:/project/detect/face/yolov5-face-landmarks-opencv/main_new.py", line 126, in <module>
    yolonet = yolov5(confThreshold=args.confThreshold, nmsThreshold=args.nmsThreshold, objThreshold=args.objThreshold)
  File "D:/project/detect/face/yolov5-face-landmarks-opencv/main_new.py", line 23, in __init__
    self.net = cv2.dnn.readNet(r'D:\project\detect\face\yolov5-face-master\yolov5n-face.onnx')
cv2.error: OpenCV(4.5.1) C:\Users\appveyor\AppData\Local\Temp\1\pip-req-build-oduouqig\opencv\modules\dnn\src\onnx\onnx_importer.cpp:1887: error: (-2:Unspecified error) in function 'cv::dnn::dnn4_v20201117::ONNXImporter::handleNode'
> Node [Add]:(430) parse error: OpenCV(4.5.1) C:\Users\appveyor\AppData\Local\Temp\1\pip-req-build-oduouqig\opencv\modules\dnn\src\onnx\onnx_importer.cpp:780: error: (-215:Assertion failed) blob_0.size == blob_1.size in function 'cv::dnn::dnn4_v20201117::ONNXImporter::handleNode'
>
Process finished with exit code 1

Reason:
opencv4.5.1 torch 1.9.0
torch1.9.0 export onnx，opencv4.5.1not supported

Solution:
torch change to version 1.7.1, torchvision 0.8.2 version  —–the other version wil report an error.

Read More:

• [Solved] Error: Cannot find module ‘webpack-cli/package.json‘
• RuntimeError: ONNX export failed: Couldn‘t export operator aten::upsample_bilinear2d
• RuntimeError: CUDNN_STATUS_EXECUTION_FAILED [How to Solve]
• [Solved] Compile the program error: undefined reference to `cv::dnn::dnn4_v20210301::Net::~Net()‘
• Cli Write Error: This is related to npm not being able to find a file. [Solved]
• Error Report of Yarn Create UMI
• NPM Install Error: npm ERR! ERESOLVE unable to resolve dependency tree
• Yarn add package loading error: operation not permitted, unlink …
• [Solved] IDEA Start Project Error: Abnormal build process termination:Could not create the Java Virtual Machine.
• [Solved] Vue.js error: Module build failed: Error: No parser and no file path given, couldn’t infer a parser.
• [Solved] Opencv3. X fatal error: opencv2/nonfree/nonfree.hpp: there is no such file or directory
• MOTR compiling error: cannot call member function ‘void std::basic_string＜_CharT, _Traits, _Alloc＞::_R
• [Solved] NPM Error: gyp: No Xcode or CLT version detected!
• [Solved] Error 404 in compiling and running vuecli build
• CMake Error: The source directory “opencv Install Catalog“ does not appear to contain CMakeLists.txt.
• [Solved] Executing npm install error: npm ERR! code EINTEGRITY
• How to Fix Node SASS Error in Vue + webpack project after nodejs upgrade
• Error. Onload failed when ‘rjava’ was calculated in loadnamespace()
• Yolox_s.pth Convert to tensorRT Error: AttributeError: ‘tensorrt.tensorrt.Builder‘ object has no attribute ‘max_workspace_size‘
• flutter | W/zipro(12512): Error opening archive D:\…Invalid file ERROR: dump failed because…