Troubleshoot and resolve Exchange Rates Update Results errors.
Troubleshoot and resolve issues when attempting to use an admin invitation link.
Troubleshoot and resolve App Note Setup: This app is still in development mode, and you don't have access to it. Switch to a registered test user or ask an app admin for permissions errors while authenticating using Facebook® Sign-In Integrations.
Troubleshoot and resolve Can't Load URL: The domain of this URL isn't included in the app's domains errors while authenticating using Facebook® Sign-In Integrations.
Troubleshoot and resolve main(): Failed opening required '/path/to/whmcs/..filename.php' errors.
Troubleshoot and resolve The following recipients failed errors.
Troubleshoot and resolve A fatal error occurred while fetching the update errors.