Web site connection issue

I got this error when i try to open my website login page.
Seems like it has an error when trying to connect to the DB.


Any Suggestion to fix this issue?


建立数据库连接时出错

这意味着您在wp-config.php文件中指定的用户名和密码信息不正确，或我们未能在localhost联系到数据库服务器。这可能意味着您主机的数据库服务器未在运行。

• 您确定用户名和密码正确吗？
• 您确定输入的主机名正确吗？
• 您确定数据库服务器在运行吗？

如果您不明白这些意味着什么，您应该联系您的主机提供商。如果您仍需要帮助，请访问WordPress支持论坛。

Please refer to:https://intl.aliyun.com/help/zh/faq-detail/48192.htm?spm=a3c0i.l48186zh.a3.1.RzfDtG

It seems that your wordpress installation cannot connect to the MySQL database, if it was running normally before, it could be the something related to the process, try restart the MySQL service; if you are seeing this on a fresh installation, check if you are using the correct MySQL credentials in the wp-config.php file.