Subraph error: failed to process trigger

It appears that there is an issue with the handleOrderCanceled function where the orderId parameter is missing a value. To address this, I would suggest following these steps to investigate the problem:

1. Inspect the handleOrderCanceled function: Take a closer look at the code implementation of the handleOrderCanceled function. Look for any potential areas where the orderId parameter is being assigned a value or where it is being used within the function.

2. Check for missing or incorrect parameter assignment: Verify that the orderId parameter is correctly assigned a value when the handleOrderCanceled function is called. Ensure that the value is being passed correctly from the calling code or function.

3. Review the function's usage: Examine how the handleOrderCanceled function is being used within your codebase. Look for any instances where the orderId parameter may not be provided or where it could be inadvertently omitted.

4. Consider error handling: Evaluate if there are any error handling mechanisms in place to catch and handle situations where the orderId parameter is missing. Implement appropriate error handling techniques, such as throwing an exception or returning an error message, to gracefully handle such scenarios.

5. Test and debug: Once you have made any necessary adjustments to the code, thoroughly test the handleOrderCanceled function to ensure that the issue with the missing orderId parameter has been resolved. Use appropriate test cases to cover different scenarios and validate the correctness of the function.

By following these steps, you should be able to identify and address the issue with the missing orderId parameter in the handleOrderCanceled function.