Data format?

[sajedamurra]

any information about training data structure?

[lyc728]

any information about training data structure?
Did you fix it ?

[masc-it]

You can infer it from here.

def __getitem__(self, index):
        '''
        line: image path\tlabel
        '''
        line = self.lines[index]
        img_path, label_y_str = line.strip('\n').split('\t')
        img = cv2.imread(img_path) / 255.

In your dataset.txt each line should have this structure:
path-to-img1.jpg\ttext-inside-your-img1
path-to-img2.jpg\ttext-inside-your-img2