ERROR: google.protobuf.text_format.ParseError: 11:5 : Message type "object_detection.protos.BoxCoder" has no field named "box_coder"

I am trying to use a pre-trained model for object detection where I have followed all the steps presented on other sites (like https://pylessons.com/Tensorflow-object-detection-installation/ and https://tensorflow-object-detection-api-tutorial.readthedocs.io/en/tensorflow-1.14/install.html#tf-models-install-coco ).

However, even though I was able to successfully run the files "models/research/object_detection/object_detection_tutorial.ipynb" and "models/research/object_detection/builders/model_builder_test.py", when I try to run the training have this error message:

(obj_detect_4) D:\Obj_detection_3\training>python model_main.py --logtostderr --train_dir=results/ --pipeline_config_path=ssd_inception_v2_coco.config

Instructions for updating:
Use object_detection/model_main.py.
Traceback (most recent call last):
  File "train.py", line 184, in <module>
    tf.app.run()
  File "C:\Users\vincentrm\Miniconda3\envs\obj_detect_4\lib\site-packages\tensorflow\python\platform\app.py", line 125, in run
    _sys.exit(main(argv))
  File "C:\Users\vincentrm\Miniconda3\envs\obj_detect_4\lib\site-packages\tensorflow\python\util\deprecation.py", line 306, in new_func
    return func(*args, **kwargs)
  File "train.py", line 93, in main
    FLAGS.pipeline_config_path)
  File "C:\Users\vincentrm\Miniconda3\envs\obj_detect_4\lib\site-packages\object_detection-0.1-py3.6.egg\object_detection\utils\config_util.py", line 96, in get_configs_from_pipeline_file
    text_format.Merge(proto_str, pipeline_config)
  File "C:\Users\vincentrm\Miniconda3\envs\obj_detect_4\lib\site-packages\google\protobuf\text_format.py", line 725, in Merge
    allow_unknown_field=allow_unknown_field)
  File "C:\Users\vincentrm\Miniconda3\envs\obj_detect_4\lib\site-packages\google\protobuf\text_format.py", line 793, in MergeLines
    return parser.MergeLines(lines, message)
  File "C:\Users\vincentrm\Miniconda3\envs\obj_detect_4\lib\site-packages\google\protobuf\text_format.py", line 818, in MergeLines
    self._ParseOrMerge(lines, message)
  File "C:\Users\vincentrm\Miniconda3\envs\obj_detect_4\lib\site-packages\google\protobuf\text_format.py", line 837, in _ParseOrMerge
    self._MergeField(tokenizer, message)
  File "C:\Users\vincentrm\Miniconda3\envs\obj_detect_4\lib\site-packages\google\protobuf\text_format.py", line 967, in _MergeField
    merger(tokenizer, message, field)
  File "C:\Users\vincentrm\Miniconda3\envs\obj_detect_4\lib\site-packages\google\protobuf\text_format.py", line 1042, in _MergeMessageField
    self._MergeField(tokenizer, sub_message)
  File "C:\Users\vincentrm\Miniconda3\envs\obj_detect_4\lib\site-packages\google\protobuf\text_format.py", line 967, in _MergeField
    merger(tokenizer, message, field)
  File "C:\Users\vincentrm\Miniconda3\envs\obj_detect_4\lib\site-packages\google\protobuf\text_format.py", line 1042, in _MergeMessageField
    self._MergeField(tokenizer, sub_message)
  File "C:\Users\vincentrm\Miniconda3\envs\obj_detect_4\lib\site-packages\google\protobuf\text_format.py", line 967, in _MergeField
    merger(tokenizer, message, field)
  File "C:\Users\vincentrm\Miniconda3\envs\obj_detect_4\lib\site-packages\google\protobuf\text_format.py", line 1042, in _MergeMessageField
    self._MergeField(tokenizer, sub_message)
  File "C:\Users\vincentrm\Miniconda3\envs\obj_detect_4\lib\site-packages\google\protobuf\text_format.py", line 934, in _MergeField
    (message_descriptor.full_name, name))
google.protobuf.text_format.ParseError: 11:5 : Message type "object_detection.protos.BoxCoder" has no field named "box_coder".

The problem is probably related to the "protoc" command which seems to do nothing every time I try (nothing shows up on the command prompt). I tried different solutions like:

#From research\object_detection
object_detection/protos/*.proto --python_out=.

#From research\object_detection
for /f %i in ('dir /b object_detection\protos\*.proto') do protoc object_detection\protos\%i --python_out=.

In addition, I was able to do the final installation without a problem:

#From research
python setup.py install

Does anyone have any idea to help me solve my problem ?

Configurations:

• Tensorflow (with gpu) 1.12.0
• Protocol Buff 3.11.0
• Python 3.6
• OS: Window 10