Caffe net.predict() , predict same probability

I trained pre-trained ResNet-101 following caffe model(By Kaiming He github) with 800000 data for training and 200000 data for validation. After I train this model, I got 59% accuracy for 1st and accuracy-top5 is 82% with 30 epoch as seen below picture.

But when I tried predict some images with this model(net.forward()), the results always produce same probability like below even though I tried with other images.

First thing I thought was image preprocessing problem in predict step like subtracting mean values or adequating batch size corresponding with training step. But all of these step was correctly set up. I checked all other questions having a same problem with me but couldn't find a solution. As the above picture(1) is showing, I assume the training process wasn't something wrong.

I followed "Image Classification and Filter Visualization(00-classification.ipynb)" file provided from Caffe editing model_def and model_weights with my model_def and model_weights having a 30 epoch.