base_videoFileTranslations returning 400

[Dennis_Barzanoff]

Steps:

1. Go to video-file URL
2. Load a video, I uploaded a 2.5h WAV file, mine ran fine
3. Upload an SRT file for the video, also fine here

Expected:
Loads translations

Actual: An error

and a 400 error for the api:

fetch("https://api-cdn.dioco.io/base_videoFileTranslations", {
  "headers": {
    "accept": "application/json, text/plain, */*",
    "accept-language": "de-DE,de;q=0.9,el-GR;q=0.8,el;q=0.7,en-US;q=0.6,en;q=0.5",
    "content-type": "application/json",
    "priority": "u=1, i",
    "sec-fetch-dest": "empty",
    "sec-fetch-mode": "cors",
    "sec-fetch-site": "cross-site"
  },
  "referrer": "https://www.languagereactor.com/",
  "referrerPolicy": "strict-origin-when-cross-origin",
  "method": "POST",
  "mode": "cors",
  "credentials": "omit"
});

error code 400