My first step was to research the “Error Establishing a Database Connection”, one of the most common issues in WordPress. I analyzed how incorrect credentials in the wp-config.php file can prevent the website from connecting to the database.

Through this research, I understood that when the database connection fails, the entire website becomes inaccessible, highlighting the importance of this configuration.

I also researched how correcting the credentials (database name, username, password, and host) allows the website to function properly again. This helped me understand how sensitive configuration files are and how small mistakes can lead to major issues.