Encountered 50x error while upgrading the Answer

Installation:

1. Using Alibaba Cloud server with Debian 11.3.
2. Install normally (able to use after installation, using docker-compose). Installation path for files: cd /root/data/docker_data/answer
3. Error occurred during upgrade.

Commands used:

docker-compose down 

docker-compose pull

docker-compose up -d 

yml config file:

version: "3"
services:
  answer:
    image: answerdev/answer
    ports:
      - '7906:80'            # 冒号左边可以改成自己服务器未被占用的端口
    restart: on-failure
    volumes:
      - ./answer-data:/data  # 冒号左边可以改路径，现在是表示把数据存放在在当前文件夹下的 answer-data 文件夹中

  db:
    image: mariadb:10
    command: --character-set-server=utf8mb4 --collation-server=utf8mb4_unicode_ci
    environment:
      MYSQL_ROOT_PASSWORD: discover2024519   # 数据库用户root的密码
      MYSQL_USER: answer
      MYSQL_PASSWORD: admin2024   # 数据库用户answer的密码
      MYSQL_DATABASE: answer
    volumes:
      - ./mariadb:/var/lib/mysql  # 数据存放在在当前文件夹下的 mariadb 文件夹中
    restart: on-failure

What is the reason and how to solve it?

This is a new installation.