let's encrypt *.cert.combined.combined not found.

Error when creating let's encrypt certificates. *.cert.combined.combined not found. How to fix this?

Certificate and Key Saved.

Details

Getting challenge for xxxxx.nl from acme-server...
Waiting for domain verification...
Challenge is valid.
Getting challenge for ftp.xxxxx.nl from acme-server...
Waiting for domain verification...
Challenge is valid.
Getting challenge for mail.xxxxx.nl from acme-server...
Waiting for domain verification...
Challenge is valid.
Getting challenge for pop.xxxxx.nl from acme-server...
Waiting for domain verification...
Challenge is valid.
Getting challenge for smtp.xxxxx.nl from acme-server...
Waiting for domain verification...
Challenge is valid.
Getting challenge for www.xxxxx.nl from acme-server...
Waiting for domain verification...
Challenge is valid.
Generating 4096 bit RSA key for xxxxx.nl...
openssl genrsa 4096 > "/usr/local/directadmin/data/users/xxx/domains/xxxxx.nl.key.new"
Generating RSA private key, 4096 bit long modulus
..............++
............................................................++
e is 65537 (0x10001)
Checking Certificate Private key match... Match!
Certificate for xxxxx.nl has been created successfully!

chmod: cannot access ‘/usr/local/directadmin/data/users/xxx/domains/xxxxx.nl.cert.combined.combined’: No such file or directory Enabled mail SNI config for xxxxx.nl

After this Dovecot service can't start / restart. Mail is not working anymore.

[root@vps domains]# systemctl status dovecot -l
● dovecot.service - Dovecot IMAP/POP3 email server
Loaded: loaded (/etc/systemd/system/dovecot.service; enabled; vendor preset: disabled)
Active: failed (Result: exit-code) since di 2017-12-05 18:44:17 CET; 16s ago
Process: 31240 ExecReload=/bin/kill -HUP $MAINPID (code=exited, status=0/SUCCESS)
Process: 2889 ExecStart=/usr/sbin/dovecot -F (code=exited, status=89)
Main PID: 2889 (code=exited, status=89)

dec 05 18:44:17 vps.xxxxx.nl systemd[1]: Started Dovecot IMAP/POP3 email server.
dec 05 18:44:17 vps.xxxxx.nl systemd[1]: Starting Dovecot IMAP/POP3 email server...
dec 05 18:44:17 vps.xxxxx.nl dovecot[2889]: doveconf: Fatal: Error in configuration file /etc/dovecot/conf.d/95-xxxxx.nl.conf line 2: ssl_cert: Can't open file /usr/local/directadmin/data/users/xxx/domains/xxxxx.nl.cert.combined.combined: No such file or directory
dec 05 18:44:17 vps.xxxxx.nl systemd[1]: dovecot.service: main process exited, code=exited, status=89/n/a
dec 05 18:44:17 vps.xxxxx.nl systemd[1]: Unit dovecot.service entered failed state.
dec 05 18:44:17 vps.xxxxx.nl systemd[1]: dovecot.service failed.
[root@vps domains]#

Content of file 95-xxxxx.nl.conf:

local_name xxxxx.nl {
ssl_cert = </usr/local/directadmin/data/users/xxx/domains/xxxxx.nl.cert.combined.combined
ssl_key = </usr/local/directadmin/data/users/xxx/domains/xxxxx.nl.key
}
local_name mail.xxxxx.nl {
ssl_cert = </usr/local/directadmin/data/users/xxx/domains/xxxxx.nl.cert.combined.combined
ssl_key = </usr/local/directadmin/data/users/xxx/domains/xxxxx.nl.key
}
local_name pop.xxxxx.nl {
ssl_cert = </usr/local/directadmin/data/users/xxx/domains/xxxxx.nl.cert.combined.combined
ssl_key = </usr/local/directadmin/data/users/xxx/domains/xxxxx.nl.key
}