Enable WHMCS SQL Debug Mode and Display Errors

Use the steps below to enable debug mode within WHMCS when diagnosing registrar module issues or dependency issues.
  1. Log in to your WHMCS installation with your admin credentials
  2. Click the General Settings link on the Setup menu
  3. On the General Settings page click the Other tab
  4. On the Other tab, scroll to the bottom of the page and tick the following options and then click Save changes :
    • Tick to enable PHP Error Reporting (Not recommended for production use)
    • Tick to enable logging of SQL Errors (Use only for testing purposes)
 
If the methods listed above do not assist in resolving the issue then download and use the WHMCS Custom Legacy Module

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