localhost is currently unable to handle this request.

[MCalafato]

I have followed the advanced manual set-up step by step but when trying to access the localhost from the browser, an ERROR 500 page is shown.

When accessing the error.log in the directory /var/log/apache2/matecat/error.log, the following messages appear:

[Wed May 04 11:53:17.043842 2022] [ssl:warn] [pid 9270] AH01909: 0.ajax.localhost:443:0 server certificate does NOT include an ID which matches the server name

[Wed May 04 11:53:17.044242 2022] [ssl:warn] [pid 9270] AH01906: localhost:443:0 server certificate is a CA certificate (BasicConstraints: CA == TRUE !?)

[Wed May 04 11:53:23.994769 2022] [:error] [pid 9276] [client ::1:49290] PHP Warning: file_get_contents(/home/matecat/matecat/inc/login_secret.dat): failed to open stream: Permission denied in /home/matecat/matecat/inc/Bootstrap.php on line 130

I have tried to set the common name for the ssl certificate as 'Matecat', 'localhost' and 'http://localhost' but none of them seem to work.

Is this a problem with the ssl certificate or could it be something else?