Ivan

Your admin link is opening fine at the moment, so I guess that the issue occurs when you try to log in. Do you have a root access to your server? You might need to check the Apache error_log ( or ask your hosting provider to do that)

Hey,

You might need to check your index.php file. I think that its current content is not the actual WordPress index file, but a custom one, which is displaying that page:)

I don’t think your visitors could be aware of the fact that you have logged in as Admin. They will only see the change that you have made.

Hey,

Can you provide the website URL? Have you made any changes recently?

You can always try to restore a backup of your site or revert any changes that you have made, which could lead to this issue. However, I did some research and in most of the cases the issue is caused by a plugin or a theme. What platform are you using to host your site? As mush as I have read, this error occurs on WordPress sites hosted on Windows and IIS.

You’re most welcome. I assume that you are aware of that, but you can determine which plugin is causing the issue by enabling them one-by-one and see after which one the site will crash ??

Hey,

In order to do that you will need to change your domain’s document root to /site folder. and set site URL and Home in WordPress database to : mydomain.com ??

Well, in most of the cases this means that the database configuration in your wp-config.php file is wrong.

Please check your configuration and verify that the db host, user, database and password are correct.

Hi,

You can firstly log in your control panel and check if your site files are there. You might also need to check if your database content is present. Logging from another location shouldn’t affect your website in such way.

If your files/database content are not present, the easiest way to resolve the issue is to restore the most recent backup of your website. You can also contact your hosting provider to do that for you if they are offering backups.

They will also be able to provide some more information about who accessed your account and eventually deleted the site, using their logs.

Hey, Check out the following article:

https://wordpress.backup-technology.com/FAQ#sslcert

It seems that you will need to ask your hosting provider for help anyway.

Another solution is to update the WordPress or the plugin/theme in question manually.

You can review the following tutorials. I think they would answer your question:

Adding Files for Download

and

Using Image and File Attachments

After you have an access to your admin page, you can try to enable your plugins one-by-one and test your admin login after enabling every single one of them. This way, you will see which is causing the issue.

Warning: require_once(/var/www/staging/wp-content/themes/tokutek/header.php) [function.require-once]: failed to open stream: Permission denied in /var/www/staging/wp-includes/template.php on line 501

Most likely the permissions of the file:

/var/www/staging/wp-content/themes/tokutek/header.php

or some of the parent folders are wrong, so when template.php is trying to access that file – it fails.

You might need to check your files and folders permissions and ownership. You will can do that either via SSH (if you have such access) or FTP/file manager.

I am able to load your wp-admin page properly at the moment. Could you try to log in now?

Please make sure that you do not have any redirects in your .htaccess file. You can rename your current .htaccess and set up a new one with the default WP content:

# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>
# END WordPress

Also, make sure that you do not have any plugins that make redirects. In fact, you can try to disable all of your plugins by renaming the plugins/ folder to see if some of them is causing the issue.

You can also check if your site url and home entries in the database are correct.

Restoring your site from the most recent back up is also an option that you can consider.

Well, any change that you make on your live site will be visible to all of your visitors.

If I understood you correctly you want to make some changes and if they are successful, to perform them on your live site.

I would suggest you to clone your site to a subfolder, or use a tool like “staging” or something similar to it. This way you can modify the site in the subfolder and test the new settings while your live site remains unchanged for all of your users.

You can, for example, restrict the access to the development copy of the site for rest of the users and make it visible for yourself only using the .htaccess:

deny from all
allow from Your_IP

where Your_IP is your actual computer’s IP address. Once you verify that your modifications are fine, you can repeat the changes on your live site.

As I can see, your wp-admin page is opening fine, so you can try to change your theme.

You might also need to turn the php.ini value error_reporting for your site to On, so you can see if there is actually some php error that is causing the issue.