I'm having the same problem. For me, I'm not getting redirected to my salesforce Org. This is what I see in VSCode
12:22:15.474 sfdx force:auth:web:login --setalias DevOrg --instanceurl https://login.salesforce.com --setdefaultusername » Warning: force:auth:web:login is not a sfdx command. Did you mean auth:web:login? [y/n]: » Error: Run sfdx help force for a list of available commands. 12:22:21.923 sfdx force:auth:web:login --setalias DevOrg --instanceurl https://login.salesforce.com --setdefaultusername ended with exit code 127
Salesforce Extension Pack: v50.13.0
Source: Salesforce CLI Integration (Extension)