RoseHosting

You should ensure that you always use the latest updates for core, themes, and plugins, avoid nulled themes or plugins. Try and reset your wp database user password also and use strong passwords for all users.

You should check the permissions in your WordPress directory. The common permissions for WordPress are 755 for directories and 644 for files. Also, the owner of the files and directories should be the same owner as for the PHP processes.

This could be happening because of malware caused by an outdated plugin, theme, or WordPress instance.

You should try to clean your WordPress with a plugin called WordFence.

Do you get the error when you are accessing the site via https://<domain/site>/wp-admin?

Please make sure that your database login credentials are correct. There are instances wherein you copy and paste the username/password and white spaces are included. Double check it on your wp-config.php.

If you are sure that your database credentials are correct. You can check if your database is not corrupted by adding the following line to your wp-config.php:
define( ‘WP_ALLOW_REPAIR’, true );
However, make sure you have a backup copy of the database before proceeding. Visit you site via https://<domain/site>/wp-admin/maint/repair.php
Press ‘Repair Database’ and wait for it to finish. Once finished, remove the added line.

You would want to check your webserver log file for more information about this.

You can try to increase the PHP “post_max_size” value.

It seems that your domain was expired and you managed to renew it recently. You need to change the nameservers to the previous ones you had earlier.

Please check the configuration of your Responsive Lightbox & Gallery plugin, or try to disable it.
The problem most probably is caused by this plugin.

You should monitor and find out which process utilizes the most of your CPU. Depending on that you should install and configure Fail2ban for WordPress for wp-login.php and xmlrpc.php or activate caching (one of WordPress caching plugins, redis and memcached).

• This reply was modified 3 years, 11 months ago by RoseHosting.

Try to ping the domain name for your blog from the command line while connected with VPN. There could be some connectivity issues (firewall or routing) with your VPN.

It depends on the VPN software that you use. Usually in Linux the logs are located in /var/log directory.

Even if you are able to log in, you cannot upgrade PHP version there. I notice that you’re using cPanel, you need to log in to cPanel and choose the PHP version you want to upgrade to there. Ask your webhosting support to do this for you, if you cannot do it yourself.

It means your site is using PHP 5.6, you would want to upgrade your PHP version to at least version 7.2 to get this solved.

From this line:

try_files $uri $uri/ =404;

Remove =404 and restart the nginx service.

You should check if the file wp-includes/media.php is modified by some code within your website. Usually malware modifies the WP core files, so you should scan your WordPress instance for malware.

It seems that you have an issue with the permissions. Make sure that the process owner for the web-server and php has read and write permission for the files and read write and execute for the directories.