KeyError: 'image'

[rsingh2083]

While uploading the image from mobile im getting this error. I even tried using 4.9.0 version of okhttp but still the same error.

192.168.31.250 - - [07/Dec/2020 16:08:55] "POST / HTTP/1.1" 500 -
Traceback (most recent call last):
File "/home/ubuntu/.local/lib/python3.6/site-packages/flask/app.py", line 2464, in call
return self.wsgi_app(environ, start_response)
File "/home/ubuntu/.local/lib/python3.6/site-packages/flask/app.py", line 2450, in wsgi_app
response = self.handle_exception(e)
File "/home/ubuntu/.local/lib/python3.6/site-packages/flask/app.py", line 1867, in handle_exception
reraise(exc_type, exc_value, tb)
File "/home/ubuntu/.local/lib/python3.6/site-packages/flask/_compat.py", line 39, in reraise
raise value
File "/home/ubuntu/.local/lib/python3.6/site-packages/flask/app.py", line 2447, in wsgi_app
response = self.full_dispatch_request()
File "/home/ubuntu/.local/lib/python3.6/site-packages/flask/app.py", line 1952, in full_dispatch_request
rv = self.handle_user_exception(e)
File "/home/ubuntu/.local/lib/python3.6/site-packages/flask/app.py", line 1821, in handle_user_exception
reraise(exc_type, exc_value, tb)
File "/home/ubuntu/.local/lib/python3.6/site-packages/flask/_compat.py", line 39, in reraise
raise value
File "/home/ubuntu/.local/lib/python3.6/site-packages/flask/app.py", line 1950, in full_dispatch_request
rv = self.dispatch_request()
File "/home/ubuntu/.local/lib/python3.6/site-packages/flask/app.py", line 1936, in dispatch_request
return self.view_functionsrule.endpoint
File "/home/ubuntu/Downloads/AndroidFlask-master/Part 2/FlaskServer/flask_server.py", line 11, in handle_request
imagefile = flask.request.files['image']
File "/home/ubuntu/.local/lib/python3.6/site-packages/werkzeug/datastructures.py", line 442, in getitem
raise exceptions.BadRequestKeyError(key)
werkzeug.exceptions.BadRequestKeyError: 400 Bad Request: The browser (or proxy) sent a request that this server could not understand.
KeyError: 'image'
File "/home/raghavz/.local/lib/python3.6/site-packages/werkzeug/datastructures.py", line 442, in getitem
raise exceptions.BadRequestKeyError(key)
werkzeug.exceptions.BadRequestKeyError: 400 Bad Request: The browser (or proxy) sent a request that this server could not understand.
KeyError: 'image'

[ahmedfgad]

Hi,

You are right.

A quick solution is to edit the next line from the flask_server.py script (https://github.com/ahmedfgad/AndroidFlask/blob/master/Part%202/FlaskServer/flask_server.py):

imagefile = flask.request.files['image']

The new line should use image0 rather than image as the key.

imagefile = flask.request.files['image0']

This will allow you to upload only a single image from the client to the server. I will update the project later to support multiplt image upload.

Please let me know if there still any issue.

[rsingh2083]

Thanks a lot buddy. Now im getting this error. I selected a different Image from my mobile. The images which you have provided for the digits are not getting selected for uplaod and I get the error - "Something went wrong"..Hence I tried with a random image, but then getting this error

File "/home/ubuntu/Downloads/AndroidFlask-master/Part 2/FlaskServer/flask_server.py", line 17, in handle_request
img = img.reshape(784)
ValueError: cannot reshape array of size 2332800 into shape (784,)

[ahmedfgad]

Note that the project expects a MNIST image of shape 28x28. I think you selected an image of different shape.

[rsingh2083]

Thanks Ahmad I tried copying the mnist example images in screenshot directory only then I was able to upload them.
But now getting this different error :-)

File "/home/ubuntu/Downloads/AndroidFlask-master/Part 2/FlaskServer/flask_server.py", line 18, in handle_request
loaded_model = keras.models.load_model('model.h5')
File "/home/ubuntu/.local/lib/python3.6/site-packages/keras/models.py", line 269, in load_model
model_config = json.loads(model_config.decode('utf-8'))
AttributeError: 'str' object has no attribute 'decode'

[rsingh2083]

Solved it by downgrading h5py to 2.10.0