> ## Documentation Index
> Fetch the complete documentation index at: https://trigger-v3-fix-additional-files.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# isTriggerError()

> Use this function if you're using a `try/catch` block to catch errors.

A regular `try/catch` block on its own won't work as expected with Tasks. Internally `runTask()` throws some special errors to control flow execution. This is necessary to deal with resumability, serverless timeouts, and retrying Tasks.

If this function returns `true` you must rethrow the error. If it returns `false` you can handle the error as you normally would.

## How to `catch` errors inside `run()`

You have two options:

1. Use a regular `try/catch` block and `isTriggerError()` as documented on this page.
2. Use the [io.try()](/sdk/io/try) function.

## Parameters

<ResponseField name="error" required>
  The error to check.
</ResponseField>

## Returns

<ResponseField name="boolean" required>
  `true` if the error is a Trigger Error, `false` otherwise.

  You must rethrow the error if this function returns `true`.
</ResponseField>

<RequestExample>
  ```typescript Using io.try()
  client.defineJob({
    id: "get-repo-info",
    name: "GitHub get repo info",
    version: "0.1.0",
    integrations: { github },
    trigger: eventTrigger({
      name: "repo.info",
      schema: z.object({
        owner: z.string(),
        repo: z.string(),
      }),
    }),
    run: async (payload, io, ctx) => {
      //try
      try {
        return await io.github.getRepo("get-repo", {
          owner: payload.owner,
          repo: payload.repo,
        });
      } catch (error) {
        //if it is a TriggerError you must rethrow the error
        if (isTriggerError(error)) {
          throw error;
        }

        //do whatever you want when an error occurs
        return {
          success: false as const,
          error,
        };
      }
    },
  });
  ```
</RequestExample>