I have installed Marketing cloud connector in Salesforce Sandbox. When i click on the 'marketing cloud' tab in Salesforce, I am getting error(see the screenshot). Anyone knows what would cause this? I tried uninstalling and installing it again but no luck.
$Label.et4ae5.mCCSetup could not be retrieved from custom labels: You don't have access to this record. Ask your administrator for help or to request access.