Error establishing a database connection

[wanasahonline]

my website not working
https://wanasahonline.com/

[ChrisPAR]

Hello, welcome to the forum!

Your site is working fine for me; however, it is displaying this issue:

The following article can help you troubleshoot it:

Common MySQL Connection Errors

Many websites use MySQL databases to store information and settings. However, there are some reasons why the connection to the database may fail. This article describes some commonly seen error messages when connecting to a database, as well as some general tips to keep in mind when setting up a database connection. Common Error Messages Using MySQL is great, but the error message returned if there is an issue logging in to your database can be quite confusing. Here are some commonly seen error…

More specifically, you will firstly need to set WP_DEBUG to true to fetch the actual error message:

Debugging in WordPress – Advanced Administration Handbook |...

[wanasahonline]

Hi
I’ve set WP_DEBUG to true
Could you check now

[Admin]

I checked your website. The website is still blank, but the response status code is 200, which means the request was successful.

With WordPress, this can be caused by selecting a certain theme for that website for which the files are missing. For example by choosing a theme and then deleting the files of the theme.

Are you able to access wp-admin? If so, could you please try switching to a different theme and see if that changes anything?

[wanasahonline]

No , I’m not able to login admin page.
it show me error in password, I Changed the password throw phpMyAdmin, Then re-log into admin page, it show me blank page.
Thanks