之前安装成功，一切运行正常，后来服务器apt upgrade了一下。现在登陆界面可以访问，登陆后出现page unavailable。已经清理了cache。但是
./seahub.sh restart 后出现
Error happened during creating seafile admin.
请问有什么办法解决吗？
版本是9.0.2。
或者，请问如果要重新安装部署的话，如何将之前的信息备份呢？
mysql 数据库，可以用phpMyAdmin访问，seafile的数据库用户也正常。
log中大量错误：
2022-02-20 11:11:08 socket file exists, delete it anyway
2022-02-20 11:11:08 …/common/seaf-utils.c(333): Use database Mysql
2022-02-20 11:11:08 http-server.c(192): fileserver: worker_threads = 10
2022-02-20 11:11:08 http-server.c(206): fileserver: fixed_block_size = 8388608
2022-02-20 11:11:08 http-server.c(221): fileserver: web_token_expire_time = 3600
2022-02-20 11:11:08 http-server.c(236): fileserver: max_indexing_threads = 1
2022-02-20 11:11:08 http-server.c(251): fileserver: max_index_processing_threads= 3
2022-02-20 11:11:08 http-server.c(273): fileserver: cluster_shared_temp_file_mode = 600
2022-02-20 11:11:08 http-server.c(2795): Could not bind socket: Address already in use
我又重新运行了一下apt upgrade 然后重新启动了一下，居然又都好了。。。好奇怪啊