File generation exception

[GGBoy-hero]

Initiated through API request, the first time a normal file can be returned, but when a request is made later, the interface result returns 200, but the returned audio file is blank with no data and a file size of only about 417b

curl -X POST https://api.fish.audio/v1/tts
-H "Authorization: Bearer $FISH_API_KEY"
-H "Content-Type: application/json"
-H "model: s2"
-d '{
"text": "This is a custom voice from Fish Audio! You can explore hundreds of different voices on the platform, or even create your own.",
"reference_id": "'"$REFERENCE_ID"'",
"format": "mp3"
}'
--output custom_voice.mp3