problem in training

[hala3]

As you see after starting the training i have this erro can you help me to solve it please ???

299/300 [============================>.] - ETA: 0s - loss: 0.1770 - acc: 0.9238Epoch 00001: loss improved from inf to 0.17682, saving mod300/300 [==============================] - 80s 268ms/step - loss: 0.1768 - acc: 0.9239 14/14 [==============================] - 2s 124ms/step /home/hala/anaconda3/envs/py35gpu/lib/python3.5/site-packages/skimage/io/_io.py:141: UserWarning: data/membrane/test/0_predict.png is a low contrast image warn('%s is a low contrast image' % fname) Lossy conversion from float32 to uint8. Range [0, 1]. Convert image to uint8 prior to saving to suppress this warning. /home/hala/anaconda3/envs/py35gpu/lib/python3.5/site-packages/skimage/io/_io.py:141: UserWarning: data/membrane/test/1_predict.png is a low contrast image warn('%s is a low contrast image' % fname) Lossy conversion from float32 to uint8. Range [0, 1]. Convert image to uint8 prior to saving to suppress this warning. /home/hala/anaconda3/envs/py35gpu/lib/python3.5/site-packages/skimage/io/_io.py:141: UserWarning: data/membrane/test/2_predict.png is a low contrast image warn('%s is a low contrast image' % fname) Lossy conversion from float32 to uint8. Range [0, 1]. Convert image to uint8 prior to saving to suppress this warning. /home/hala/anaconda3/envs/py35gpu/lib/python3.5/site-packages/skimage/io/_io.py:141: UserWarning: data/membrane/test/3_predict.png is a low contrast image warn('%s is a low contrast image' % fname) Lossy conversion from float32 to uint8. Range [0, 1]. Convert image to uint8 prior to saving to suppress this warning. /home/hala/anaconda3/envs/py35gpu/lib/python3.5/site-packages/skimage/io/_io.py:141: UserWarning: data/membrane/test/4_predict.png is a low contrast image warn('%s is a low contrast image' % fname) Lossy conversion from float32 to uint8. Range [0, 1]. Convert image to uint8 prior to saving to suppress this warning. /home/hala/anaconda3/envs/py35gpu/lib/python3.5/site-packages/skimage/io/_io.py:141: UserWarning: data/membrane/test/5_predict.png is a low contrast image warn('%s is a low contrast image' % fname) Lossy conversion from float32 to uint8. Range [0, 1]. Convert image to uint8 prior to saving to suppress this warning. /home/hala/anaconda3/envs/py35gpu/lib/python3.5/site-packages/skimage/io/_io.py:141: UserWarning: data/membrane/test/6_predict.png is a low contrast image warn('%s is a low contrast image' % fname) Lossy conversion from float32 to uint8. Range [0, 1]. Convert image to uint8 prior to saving to suppress this warning. /home/hala/anaconda3/envs/py35gpu/lib/python3.5/site-packages/skimage/io/_io.py:141: UserWarning: data/membrane/test/7_predict.png is a low contrast image warn('%s is a low contrast image' % fname) Lossy conversion from float32 to uint8. Range [0, 1]. Convert image to uint8 prior to saving to suppress this warning. /home/hala/anaconda3/envs/py35gpu/lib/python3.5/site-packages/skimage/io/_io.py:141: UserWarning: data/membrane/test/8_predict.png is a low contrast image warn('%s is a low contrast image' % fname) Lossy conversion from float32 to uint8. Range [0, 1]. Convert image to uint8 prior to saving to suppress this warning. /home/hala/anaconda3/envs/py35gpu/lib/python3.5/site-packages/skimage/io/_io.py:141: UserWarning: data/membrane/test/9_predict.png is a low contrast image warn('%s is a low contrast image' % fname) Lossy conversion from float32 to uint8. Range [0, 1]. Convert image to uint8 prior to saving to suppress this warning. /home/hala/anaconda3/envs/py35gpu/lib/python3.5/site-packages/skimage/io/_io.py:141: UserWarning: data/membrane/test/10_predict.png is a low contrast image warn('%s is a low contrast image' % fname) Lossy conversion from float32 to uint8. Range [0, 1]. Convert image to uint8 prior to saving to suppress this warning. /home/hala/anaconda3/envs/py35gpu/lib/python3.5/site-packages/skimage/io/_io.py:141: UserWarning: data/membrane/test/11_predict.png is a low contrast image warn('%s is a low contrast image' % fname) Lossy conversion from float32 to uint8. Range [0, 1]. Convert image to uint8 prior to saving to suppress this warning. /home/hala/anaconda3/envs/py35gpu/lib/python3.5/site-packages/skimage/io/_io.py:141: UserWarning: data/membrane/test/12_predict.png is a low contrast image warn('%s is a low contrast image' % fname) Lossy conversion from float32 to uint8. Range [0, 1]. Convert image to uint8 prior to saving to suppress this warning. /home/hala/anaconda3/envs/py35gpu/lib/python3.5/site-packages/skimage/io/_io.py:141: UserWarning: data/membrane/test/13_predict.png is a low contrast image warn('%s is a low contrast image' % fname) Lossy conversion from float32 to uint8. Range [0, 1]. Convert image to uint8 prior to saving to suppress this warning.

[anomoto]

I have solved the same problem using this method.