raise IOError("decoder %s not available" % decoder_name) OSError: decoder zip not available

[ikrambennasrbennasr]

Hello , please when i run python app.py , the model can't predict and i get this error :

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/home/ubuntu/kerasenv/lib/python3.6/site-packages/flask/app.py", line 1982, in wsgi_app
response = self.full_dispatch_request()
File "/home/ubuntu/kerasenv/lib/python3.6/site-packages/flask/app.py", line 1614, in full_dispatch_request
rv = self.handle_user_exception(e)
File "/home/ubuntu/kerasenv/lib/python3.6/site-packages/flask/app.py", line 1517, in handle_user_exception
reraise(exc_type, exc_value, tb)
File "/home/ubuntu/kerasenv/lib/python3.6/site-packages/flask/_compat.py", line 33, in reraise
raise value
File "/home/ubuntu/kerasenv/lib/python3.6/site-packages/flask/app.py", line 1612, in full_dispatch_request
rv = self.dispatch_request()
File "/home/ubuntu/kerasenv/lib/python3.6/site-packages/flask/app.py", line 1598, in dispatch_request
return self.view_functionsrule.endpoint
File "app.py", line 51, in predict
x = imread('output.png', mode='L')
File "/home/ubuntu/kerasenv/lib/python3.6/site-packages/scipy/misc/pilutil.py", line 155, in imread
return fromimage(im, flatten=flatten, mode=mode)
File "/home/ubuntu/kerasenv/lib/python3.6/site-packages/scipy/misc/pilutil.py", line 230, in fromimage
im = im.convert(mode)
File "/home/ubuntu/kerasenv/lib/python3.6/site-packages/PIL/Image.py", line 829, in convert
self.load()
File "/home/ubuntu/kerasenv/lib/python3.6/site-packages/PIL/ImageFile.py", line 200, in load
d = Image._getdecoder(self.mode, d, a, self.decoderconfig)
File "/home/ubuntu/kerasenv/lib/python3.6/site-packages/PIL/Image.py", line 415, in _getdecoder
raise IOError("decoder %s not available" % decoder_name)
OSError: decoder zip not available
41.231.56.90 - - [04/Jul/2018 12:42:57] "POST /predict/ HTTP/1.1" 500 -

Any helps please . Thanks

[afarane]

When I run python app.py
Chrome Address change http://localhost:5000 to http://localhost:5000/# but no prediction. ?