error 5001 when requesting a artwork

[jboisjo]

Hi,

i'm trying to get artworks from a program with https://json.schedulesdirect.org/20141201/metadata/programs/ and i put the programID in parameters to get it. Sometimes it's working but sometimes i'm getting

{
    "programID": "EP025855320055",
    "data": {
      "response": "IMAGE_QUEUED",
      "code": 5001,
      "serverID": "20141201.web.1",
      "message": "Image queued for generation. Try again. If error persists post message to http://forums.schedulesdirect.org/viewforum.php?f=6 ",
      "datetime": "2017-06-15T15:51:34Z"
    }

There's no doc about it in here? Could i get some help plz?