通义千问-图像编辑接口报错“SystemError”，入参及header完全按照要求调用

URL：https://dashscope.aliyuncs.com/api/v1/services/aigc/multimodal-generation/generation
入参：
{
"model": "qwen-image-edit",
"input ": {
"messages ": [
{
"role ": "user",
"content": [
{
"image": "https://mrstage-oss.oss-cn-shanghai.aliyuncs.com/nocode/20250903/fe4cf05f-1e1e-490e-a52b-0033b061b655-1_EJMRCgYAxb.png"
},
{
"text": "将白色的自行车改成红色的"
}
]
}
]
},
"parameters": {
"negative_prompt": "",
"watermark": false
}
}
返回结果：
{
"request_id": "5a6a1ad7-2492-9ae7-a2a1-0096e119ae72",
"code": "SystemError",
"message": "An system error has occurred, please try again later."
}