Thank you @israel.cefrin,
All three files exist. bootstrap.inc.php is in
/home/ojs/lib/pkp/includes/bootstrap.inc.php
Zur Info: http://iap.li/phpinfo.php liegt in /home/public_html/lib/pkp/includes/bootstrap.inc.php
Then I changed the permissions of all files and directories to read and write (666). The result was that instead of a blank screen we got a Forbidden:
You don't have permission to access / on this server.
Server unable to read htaccess file, denying access to be safe
Additionally, a 403 Forbidden error was encountered while trying to use an ErrorDocument to handle the request.
Then I set the permission for all folders and files to 777. The files_dir and all its content also has 777. Now we get an ‘Internal Server Error’:
The server encountered an internal error or misconfiguration and was unable to complete your request.
Please contact the server administrator at webmaster@fzwp.iap.li to inform them of the time this error occurred, and the actions you performed just before this error.
More information about this error may be available in the server error log.
Additionally, a 500 Internal Server Error error was encountered while trying to use an ErrorDocument to handle the request.
As I only have access to the host via cPanel and FTP, I believe that I cannot change the owner. What shall I do? If I understand FAQ permissions correctly, 777 on all files and folders should eliminate all permission errors. Or can too many permission cause errors too?
Would it help to set ‘installed’ to ‘Off’ and go through the installation? This is really exhausting.