cannot copy files with filesCopyBatchV2

I am trying to copy some files from my `Camera Uploads` folder to another folder `Videos`

 

first I do

const { async_job_id } = await dropbox.filesCopyBatchV2({
      entries,
      autorename: false,
    });    

This seems to work because I get back a long string for async_job_id

Then I do the following:

while (true) {
    try {
      let response = await dropbox.filesCopyBatchCheckV2({ async_job_id });
      if (response['.tag'] != 'in_progress') {
        break;
      }
      await sleep(5000);
    } catch (error) {
      break;
    }

What happens is that I hit filesCopyBatchCheckV2 endpoint 5 or 6 times; I get back a response of in_progress each time; then I get a response with a status of 409, statusText of "Conflict" and an error_summary of internal_error.

 

No files get transferred.

 

Please help!