Troubleshoot and resolve InvalidArgumentException: Data missing errors.
Troubleshoot and resolve issues with missing taxes on invoices.
Troubleshoot and resolve Fatal error: The file was encoded by... errors.
Troubleshoot and resolve Site error: the ionCube PHP Loader needs to be installed. errors.
Troubleshooting and resolving Key Generation Failed: (XID xxxxxx) You do not have the feature “sslmanager” errors while selling SSL certificates through WHMCS MarketConnect.
Troubleshoot and resolve failing database backups for large WHMCS installations.
Troubleshoot and resolve Failed to remove legacy modules errors.