xtrabackup --move-back fails with "cannot open file" error

Hello guys, 

I hope not to ask something too obvious, but I can’t find anything that can help me with my problem. I have tried to make a Master/Slave test server with https://www.percona.com/doc/percona-xtrabackup/2.3/howtos/setting_up_replication.html as a guide but I’m stuck at the second step, move-back command.  When I run “xtrabackup --move-back --target-dir=/home/cmihai/mysql_xtrabackup” command, i receive:  

I already check the version of xtrabackupserver and it is the same on both servers. I guess it’s a rights issue but I haven’t found anything concrete on the internet, and the rights are given on root, the same user I’m logged in to when I run the command

Hi @Fatidic
I would suggest you to try Percona XtraBackup 8.0.
https://www.percona.com/doc/percona-xtrabackup/8.0/index.html
Percona XtraBackup 2.4 does not support making backups of databases created in MySQL 8.0, Percona Server for MySQL 8.0 or Percona XtraDB Cluster 8.0.