Hello Zhang/geos_one. I have this problem and have followed the suggestions above, but log file is still indicating the same issue.
Cannot authenticate to Cluebringer or AWStats
[Sun May 25 21:16:05.775283 2014] [ssl:warn] [pid 2085] AH01906: RSA server certificate is a CA certificate (BasicConstraints: CA == TRUE !?)
[Sun May 25 21:16:06.504626 2014] [ssl:warn] [pid 2086] AH01906: RSA server certificate is a CA certificate (BasicConstraints: CA == TRUE !?)
[Sun May 25 21:16:06.682428 2014] [mpm_prefork:notice] [pid 2086] AH00163: Apache/2.4.7 (Ubuntu) OpenSSL/1.0.1f mod_wsgi/3.4 Python/2.7.6 configured -- resuming normal operations
[Sun May 25 21:16:06.682531 2014] [core:notice] [pid 2086] AH00094: Command line: '/usr/sbin/apache2'
[Sun May 25 21:16:18.563625 2014] [:error] [pid 2092] No requires line available
Any ideas? Running latest iRedEmail /iRedMail-0.8.7 on Ubuntu 18.104.22.168 Help appreciated. Cheers, Greg