Hello, I tried several times to log in to https://test.saleforce.com after I had typed in these commands: sfdx auth:web:login -r https://test.salesforce.com -a FullSandbox
sfdx auth:web:login -r https://test.salesforce.com -a DevSandbox. I had tried to clear the cache and still unable to log it. Please help! Thanks

Hello, I tried several times to log in to https://test.saleforce.com after I had typed in these commands: sfdx auth:web:login -r https://test.salesforce.com -a FullSandbox
sfdx auth:web:login -r https://test.salesforce.com -a DevSandbox. I had tried to clear the cache and still unable to log it. Please help! Thanks