"Could not validate file" error

Hi. Does anyone else have a problem where the API returns “Could not validate file” error immediately after uploading?

Upload progress: 100%|████████████████████████████████████████████████████████████████████| 605k/605k [00:00<00:00, 979Mit/s]
Uploaded file from /home/panta/Desktop/training_data.jsonl: file-7r5r4OBPXqINwU0O0F7Di3yh
Created fine-tune: ft-O58KptyLMleJC1TfVMi7NTFU
Streaming events until fine-tuning is complete...

(Ctrl-C will interrupt the stream, but not cancel the fine-tune)
[2022-11-01 22:08:49] Created fine-tune: ft-O58KptyLMleJC1TfVMi7NTFU
[2022-11-01 22:09:06] Fine-tune failed. Errors:
Error with file-7r5r4OBPXqINwU0O0F7Di3yh: Could not validate file. Please contact us through our help center at help.openai.com for assistance.

Job failed. Please contact support@openai.com if you need assistance.

I’ve ran openai tools fine_tunes.prepare_data and it found no remediations, so it should be good to go?

The file contains ~500 items like this:

{"prompt":"\nDuring my career, on top of frontend programming, I've spent about equal amount of time in 2 other areas.","completion":" Is frontend the easiest area of programming?\n\nAs a full stack engineer, I think yes.\n\nHere's why.{;|"}

I am also having this exact same issue, would appreciate any assistance.