Can't log in to Plesk: cannot load certificate "/usr/local/psa/admin/conf/httpsd.pem"

Symptoms

• Plesk is not accessible after server restart, sw-cp-server service fails to start.

• Errors in /var/log/sw-cp-server/error.log:

  CONFIG_TEXT: cannot load certificate "/usr/local/psa/admin/conf/httpsd.pem": PEM_read_bio_X509_AUX() failed (SSL: error:0909006C:PEM routines:get_name:no start line:Expecting: TRUSTED CERTIFICATE)

Cause

SSL certificate is corrupted.

Resolution

1. Log in to Plesk server via SSH

2. Restore the certificate:

   # cp /usr/local/psa/admin/conf/httpsd.pem.sav /usr/local/psa/admin/conf/httpsd.pem

3. Restart sw-cp-server service:

   # systemctl restart sw-cp-server