Suddenly ‘Error establishing a database connection’ on my xampp server

Hi, I wonder if you could give me an insight on why I am getting this error message: ‘Error establishing a database connection’ suddenly. Last week it was working properly and I havent changed anything.

The link to my wordpress site is:
https://localhost/wordpress/

has been working fine until i found out yesterday when I got this message.

Accessing the wp-admin gives me a slight different message:
‘Can’t select database
We were able to connect to the database server (which means your username and password is okay) but not able to select the bitnami_wordpress database.

Are you sure it exists?
Does the user bn_wordpress have permission to use the bitnami_wordpress database?
On some systems the name of your database is prefixed with your username, so it would be like username_bitnami_wordpress. Could that be the problem?’

This is really strange as i havent messed with any of the config files. Havent even used my computer for a week. Any help would be appreciated