训练一切正常，但是保存第一个模型时出现了ZeroDivisionError: float division by zero about lora-svc HOT 2 OPEN

#@title 生成验证集文件列表
import random

def cut_and_paste(train_file_path, eval_file_path):
    with open(train_file_path, 'r') as f:
        lines = f.readlines()
        random_lines = random.sample(lines, 5)
    with open(eval_file_path, 'w') as f:
        f.write('')
    with open(eval_file_path, 'a') as f:
        for line in random_lines:
            f.write(line)
            
cut_and_paste('/content/lora-svc/filelists/train.txt', '/content/lora-svc/filelists/eval.txt')