Update app.py

app.py

@@ -115,7 +115,7 @@ def extract_invoice_data(file_data, content_type, json_schema):
                 base64_encoded = base64.b64encode(img_byte_arr.getvalue()).decode('utf-8')
                 base64_images.append(f"data:image/png;base64,{base64_encoded}")
 
-            content_type = "image/png"
+            content_type = "application/pdf"
 
         except Exception as e:
             logger.error(f"Error converting PDF to image: {e}")
@@ -125,6 +125,7 @@ def extract_invoice_data(file_data, content_type, json_schema):
         # Handle direct image files
         base64_encoded = base64.b64encode(file_data).decode('utf-8')
         base64_images.append(f"data:{content_type};base64,{base64_encoded}")
+        content_type = "image/png"
 
     # Prepare OpenAI request
     openai_content = [{"type": "image_url", "image_url": {"url": img_base64}} for img_base64 in base64_images]