Error: “Exception Occurred during Running Replacer “REPLACEMENT_ID,” When Converting Yolo V3-Tiny Model to OpenVINO™ Intermediate Representation [IR] Format

• Followed the commands in Converting YOLO* Models to the Intermediate Representation (IR) to convert Yolo V3-Tiny model to IR format.
• Encountered error:
  Error: Exception occurred during running replacer "REPLACEMENT_ID" (<class 'extensions.middle.PartialInfer.PartialInfer'>): Stopped shape/value propagation at "detector/yolo-v3-tiny/Conv_12/BiasAdd/YoloRegion" node.

Upgrade to OpenVINO™ 2020.4.

Refer to Converting YOLO* Models to the Intermediate Representation (IR) to find the commands to freeze the model and convert it to IR format:

1. Freeze the model:
   python convert_weights_pb.py --class_names coco.names --data_format NHWC --weight_file yolov3-tiny.weights –tiny
2. Convert the frozen model to IR format:
   python3 mo_tf.py --input_model /path/to/yolo_v3_tiny.pb --tensorflow_use_custom_operations_config $MO_ROOT/extensions/front/tf/yolo_v3_tiny.json --batch 1

   where:

   • --batch defines shape of model input. In the example, --batch is equal to 1, but you can also specify other integers larger than 1.
   • --tensorflow_use_custom_operations_config adds missing Region layers to the model. In the IR, the Region layer has name RegionYolo.