Make sure to set the site URL properly, it looks like you haven't set it up properly for use over SSL.

    Clicking any topic throws up an error for me.

      Hi JohnP Thank you for your feedback. Yes I am also seeing the error. But it was fine before. Let me go through it.

        Hi KarlReza1 Yes I am also seeing this now. But I configure SSL before but it is now working here too. Let me check once. Appriciate your assistance! :

          Seems all error are for SSL issue. Thank you Team.

          I found the issue. Site is set to run on https:// but not on https:// www.

            KarlReza1 Set up a redirect from www to non-www to solve the issue for all visitors. A quick search will find you instructions on how to do that depending on your server - apache/nginx/etc.

                jewel you should set up a redirect from www.forum.assistavenue.com to forum.assistavenue.com. And then also update your config.php to use https://forum.assistavenue.com.

                    luceos Thank you for your quick reply. I tried to change accordingly in my apache server. But seems still when I browse with www it does not redirect to https://...

                    My htaccess file configured accordingly. And config.php also show this url: https://forum.assistavenue.com. Thank you for your kind help.

                    <IfModule mod_headers.c>
  RequestHeader unset Proxy
</IfModule>
RewriteCond %{HTTPS} off
RewriteCond %{HTTP:X-Forwarded-SSL} !on
RewriteCond %{HTTP_HOST} ^forum\.assistavenue\.com$ [OR]
RewriteCond %{HTTP_HOST} ^www\.forum\.assistavenue\.com$
RewriteRule ^/?$ "https\:\/\/forum\.assistavenue\.com\/" [R=301,L]

                        If you're using cloudflare DNS, it's better to quickly set up a page rule for the redirect.

                          KarlReza1 yeah they aren't.

                          jewel RewriteCond %{HTTPS} off
                          RewriteCond %{HTTP:X-Forwarded-SSL} !on
                          RewriteCond %{HTTP_HOST} forum.assistavenue.com$ [OR]
                          RewriteCond %{HTTP_HOST} www.forum.assistavenue.com$
                          RewriteRule ^/?$ "https:\/\/forum.assistavenue.com\/" [R=301,L]

                          I don't think you should redirect both, how about this:

                          RewriteEngine On
RewriteCond %{HTTP_HOST} ^www\.(.*)$ [NC]
RewriteRule ^(.*)$ https://%1/$1 [R=301,L]

                                luceos Thank you for your nice suggestion. Let me try with this one and check again. 🙂

                                  Hi @luceos, @KarlReza1 and @JohnP Thanks for your investigation and suggestion, I tried with this as suggested by @luceos :

                                  RewriteEngine On
RewriteCond %{HTTP_HOST} ^www\.(.*)$ [NC]
RewriteRule ^(.*)$ https://%1/$1 [R=301,L]

                                  And seems working fine now. Thank you so much!!!