Sometimes an error can make your WordPress admin area inaccessible. In that case, you will not be able to change the topic using the above method.
To restore your site, you need to restore it from a backup or you can fix the WordPress error that is causing the problem.
However, if you do not have a backup, you can change the topic manually with the help of phpMyAdmin.
This method allows you to tell WordPress which topic to use by changing the information in the database.
First, you need to connect to your website using an FTP client or manage the directory on the host and access the / wp-content / Themes / directory.
Here you will be able to see all the topics currently installed on your site. You can also install a WordPress theme by downloading a theme folder if you don’t see it.
Next, you need to write down the folder name of the topic you want to use as you will need it later.
After that, you need access to cPanel of your WordPress hosting account. On this page, you will have to scroll down to the Database section and then click on phpMyAdmin .
When you are in phpMyAdmin, you will see a list of databases on the left of the screen. Just click on the database you are using for your WordPress site.
Next, it will show you the list of tables in this database. You need to click on the online wp_options board to open it.
Note : By default, WordPress uses wp_ as the prefix for the table name. However, there may be different database prefixes , as shown in the image above.
Now you need to locate the template and stylesheet rows on the right table as shown below.
Next, click on the Edit link to open the editor.
Here, you need to change the value in the option_value field to the subject name you want to use. It is usually the same as the folder name in the / wp-content / Themes / folder that you copied earlier.
Once you’re done, click the Go button to save the changes. Next, go ahead and repeat the same process for the stylesheet .
After making changes to both rows, you can visit your website to see the new thread in action.Read more :