Service Portal widget error: widget script threw exception

Undefined variables or null reference errors in the widget's server script, client controller, or link function attempting to access properties that don't exist. (high likelihood)

Syntax errors in the widget's JavaScript code including missing semicolons, unmatched brackets, or incorrect function declarations. (high likelihood)

API calls or GlideRecord queries in server script failing due to access control restrictions, invalid table names, or malformed query conditions. (medium likelihood)

Client-side code attempting to access server-side data that wasn't properly passed through the data object or calling undefined AngularJS functions. (medium likelihood)

Infinite loops or recursive function calls in widget scripts causing stack overflow exceptions during execution. (low likelihood)

Step 1: Open the browser developer tools (F12) and check the Console tab for detailed JavaScript error messages including line numbers and specific error descriptions.

Step 2: Navigate to Service Portal > Service Portal Configuration > Widget Editor and locate the problematic widget mentioned in the error message.

Step 3: Review the Server Script section for syntax errors, undefined variables, and add try-catch blocks around GlideRecord operations and API calls to handle exceptions gracefully.

Step 4: Examine the Client Controller and Link function for undefined variables, ensure all server data is properly accessed through the data object, and verify AngularJS syntax is correct.

Step 5: Test the widget in isolation by creating a test page with only that widget to isolate the issue from other page components or widget interactions.

Step 6: Check the System Log at System Diagnostics > Log > Application Logs for any server-side errors that might provide additional context about the widget failure.

Step 7: Use the Service Portal Debugger by adding gs.log() statements in server script and console.log() in client script to trace execution flow and identify where the exception occurs.

Step 8: Validate that all required widget dependencies and CSS/JS includes are properly configured and accessible to ensure the widget has all necessary resources to execute.