Worker error: body must be a map

This weird error caused a lost run:

✘ e8ed3956-8cc6-4a19-9634-fc57dfdd4823 :: step:complete :: ERR: [step:complete] {"body":["must be a map"]}

link to app

I can only think that somehow the step has sent an invalid structure as the dataclip body

The job code is strange but harmless, so far as I can see (I've tried breaking it down into a repro, but failed)

each('$.cachedData[*]',
    state => Object.entries(state.data.value.rawData),
    fn(state => {
      const [tableName, rows] = state.data;
      
      // Define the order to respect foreign keys
      const insertOrder = ['person', 'patient', 'person_name', 'person_address', 'patient_identifier'];
      
      // Only process if this table is in our current batch
      if (insertOrder.includes(tableName)) {
        console.log(`Processing ${tableName} with ${rows.length} rows`);
        return { ...state, tableName, rows };
      }
      
      console.log(`Skipping ${tableName} - not in insert order`);
      return upsertMany(
      state => state.tableName,
      state => state.rows
    )(state)
    }),
    
  )

Start with the linked run and the worker's handling of the step:complete error, then trace where the dataclip body is validated and how the shown job passes state through each(). Determine why an array reaches a path requiring a map, reproduce the failure if possible, and verify that the run no longer fails or loses work.