PipeDream Internal Error & Out of memory error

Take a look at the most recent execution. I modified the final step to:

await $respond({
  status: 200,
  immediate: true,
  body: steps.transform.$return_value
})

It was previously:

await $respond({
  status: 200,
  immediate: true,
  body: await $respond({
  status: 200,
  immediate: true,
  body: steps.transform.$return_value
})
})

it looks like you may have copied-and-pasted the example code into that cell twice, and it was triggering an internal error in the code we use to run your workflow.