axios error code 499 for chrome extension

i’m using axios to send some queries to leetcode to access their graphql API. I’m using a chrome extension that reads the necessary cookie credentials so that i can use it as auth for the API. however, I’m getting Request failed with status code 499 errors as a response. my query and cookies work on postman, but it’s not working when i use axios. I’m not sure what postman is doing differently, but I’ll post my code here:

    let url = `https://leetcode.com/graphql`;
    const fetchSubmissionList = async (questionSlug) => {
        let query = `
            questionSubmissionList(
               offset: 0,
               limit: 20,
               questionSlug: ${questionSlug}
             ) {
                lastKey
                hasNext
                submissions {
                    id
                    title
                    titleSlug
                    status
                    statusDisplay
                    lang
                    langName
                    runtime
                    timestamp
                    url
                    isPending
                    memory
                    hasNotes
                    notes
                }
            }
        }
        `

        chrome.storage.local.get(["LEETCODE_SESSION"]).then((result) => {
            console.log("LEETCODE_SESSION - " + JSON.stringify(result));
            setSession(result["LEETCODE_SESSION"])
            document.cookie = `LEETCODE_SESSION=${result["LEETCODE_SESSION"]}; SameSite=None; Secure`;
            chrome.storage.local.get(["csrftoken"]).then(async (result) => {
                console.log("csrftoken - " + JSON.stringify(result));
                setToken(result["csrftoken"])
                document.cookie = `csrftoken=${result["csrftoken"]}; SameSite=None; Secure`;
                await axios.post(
                    url, { query: JSON.stringify(query) }, 
                    {
                        headers: {
                            'Content-Type': 'application/json',
                            'Access-Control-Allow-Origin':  '*',
                            'Access-Control-Allow-Methods': 'POST',
                            'Access-Control-Allow-Headers': 'Content-Type, Authorization',
                        },
                        withCredentials: true
                    }).then(res => res.json()).then(data => console.log(data))
            });
        });
    }

i found some posts addressing this in other systems (like, nginx?), but not in axios. also, i read that this error stems from your client closing your connection too soon, but i don’t know how i can change that.

thanks