Suddenly vscode stopped working with deploying the class to the sandbox I'm using and throws this message "No org configuration found for name INSTANCE NAME"
I tried to create a new project for the sandbox but still get the same error when I'm trying to retrieve all the classes from the org.
sfdx update didn't help.
sfdx force:auth:web:login -a "some-alias" -r https://test.salesforce.com/ -s
(changesome-alias
to whatever you'd like to call the sandbox).