ModelScope想用接口调用 图生图的 inpainting功能参数怎么填？

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ModelScope想用接口调用 图生图的 inpainting功能 stable diffusion webui inpaniting 这些参数怎么填？ 这个是在本地部署的stable diffusion webui 填 data['firstpass_image'] = source_pic
data['mask'] = mask_pic
data['prompt'] = prompt 返回的是 {""error"":""HTTPException"",""detail"":""Invalid encoded image"",""body"":"""",""errors"":""""}"