Hi, I'm using ubuntu 22.04 and installed dovecot 2.3.16.

I did some initial testing with 100 email accounts and everything seemed to work perfectly the same as dovecot version 2.3.16 on another server.
So I performed the migration of approximately 30 thousand email accounts, but the following error started to appear and I know well what to do:

Jul 14 18:55:29 box5 dovecot: pop3: Error: conn unix:/run/dovecot/stats-writer (pid=3733995,uid=0): Timeout waiting for handshake response
Jul 14 18:55:29 box5 dovecot: imap: Error: conn unix:/run/dovecot/stats-writer (pid=3733995,uid=0): Timeout waiting for handshake response
Jul 14 18:55:29 box5 dovecot: managesieve: Error: conn unix:/run/dovecot/stats-writer (pid=3733995,uid=0): Timeout waiting for handshake response
Jul 14 18:55:29 box5 dovecot: lmtp: Error: conn unix:/run/dovecot/stats-writer (pid=3733995,uid=0): Timeout waiting for handshake response
Jul 14 18:55:29 box5 dovecot: imap-login: Error: conn unix:/run/dovecot/stats-writer (pid=3733995,uid=0): Timeout waiting for handshake response
Jul 14 18:55:29 box5 dovecot: imap: Error: conn unix:/run/dovecot/stats-writer (pid=3733995,uid=0): Timeout waiting for handshake response
Jul 14 18:55:29 box5 dovecot: imap-login: Error: conn unix:/run/dovecot/stats-writer (pid=3733995,uid=0): Timeout waiting for handshake response
Jul 14 18:55:29 box5 dovecot: message repeated 3 times: [ imap-login: Error: conn unix:/run/dovecot/stats-writer (pid=3733995,uid=0): Timeout waiting for handshake response]
Jul 14 18:55:29 box5 dovecot: imap: Error: conn unix:/run/dovecot/stats-writer (pid=3733995,uid=0): Timeout waiting for handshake response
Jul 14 18:55:29 box5 dovecot: message repeated 2 times: [ imap: Error: conn unix:/run/dovecot/stats-writer (pid=3733995,uid=0): Timeout waiting for handshake response]

Permissions on files

79411 srw------- 1 root root 0 Jul 14 18:55 stats-reader
79412 srw-rw---- 1 root dovecot 0 Jul 14 18:55 stats-writer

Does anyone know anything about this problem that can help me?