Update server.js

server.js

@@ -70,8 +70,8 @@ app.post('/gen', upload.single('image'), async (req, res) => {
           "role": "user",
           "content": [
             {
-              "type": "image",
-              "data": img,
+              "type": "image_url",
+              "image_url": { "url": `data:image/jpeg;base64,${img}` },
             },
             {
               "type": "text",