instagram post genatate tool error, Fast API

Mr Hassan, I start to create a tool to generate different Instagram posts using live blog posts. So my Idea is to read the blog post from the given link and change that blog post according to the given Instagram content type. I use ChatGPT to generate this. but it gives me an error. please check the below code...

Sample prompt for testing:

class InstagramPost(BaseModel):
    content_type: str
    content: str

class InstagramPostGeneratorResponse(BaseModel):
    success: bool
    message: str
    posts: list[InstagramPost]

@router.get("/instagram/generate")
async def generate_instagram_posts(url: str, content_type: str):
    start_time = time.time()
    max_retries = 5

    headers = {
        "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.3"
    }

    for retry_count in range(max_retries):
        try:
            response = requests.get(url, headers=headers)
            if response.status_code != 200:
                logger.error(f"Failed to fetch blog post content, HTTP status code: {response.status_code}")
                raise HTTPException(status_code=response.status_code, detail="Failed to fetch blog post content")

            blog_content = response.text

            if await llm.is_text_flagged(blog_content) or await llm.is_text_flagged(content_type):
                return {
                    "success": False,
                    "message": "Input Not Allowed",
                    "result": None
                }

            prompt = pr.generate_instagram_posts.format(blog_content=blog_content, content_type=content_type)
            # Assuming llm.generate_with_response_model generates Instagram posts directly
            # Replace with appropriate logic based on llm functionality
            generated_posts = await llm.generate_with_response_model(prompt, 3, InstagramPostGeneratorResponse)

            if generated_posts:
                return {
                    "success": True,
                    "message": "Generated Instagram Posts Successfully",
                    "result": generated_posts.posts
                }
            else:
                raise Exception("Failed to generate Instagram posts")

        except requests.exceptions.RequestException as e:
            logger.error(f"An HTTP error occurred: {e}")
            raise HTTPException(status_code=500, detail=f"An HTTP error occurred: {e}")

        except (json.JSONDecodeError, ValidationError) as e:
            logger.warning(f"Failed during JSON decoding or validation. Retry count: {retry_count + 1}. Error: {e}")

        except KeyError as e:
            logger.warning(f"Missing key in JSON: {e}")

        except Exception as e:
            logger.error(e)
            continue
        finally:
            elapsed_time = time.time() - start_time
            # do something with the elapsed time

    return {
        "success": False,
        "message": "Failed to generate Instagram posts",
        "result": None
    }