When Kilo gateway + Nvidia NeMo :free model returns content: null
for image inputs, get_json_completion crashed with
'the JSON object must be str, bytes or bytearray, not NoneType'
and retried 5 times (unnecessary).
Fixes:
- _should_retry no longer retries RuntimeError with 'null content'
(retrying won't help — the model genuinely returned null)
- get_json_completion now raises RuntimeError explicitly when
content is None, with a clear message (instead of json.loads(None))
busya
1a7f368324