I use the following method to generate a board of threads, whether it’s a specific page, or the whole catalog.

function displayThreads() {
    function addBoardThread(threadArr, threadNum) {
        $.ajax({
            url     : 'to/url/make.php',
            method  : 'POST',
            data    : {
                threads     : threadArr,
                thread_no   : threadNum,
                return      : url.pathname
            }
        }).done(function(html) {
            $('#board').html($('#board').html() + html);
        }).fail(function(msg) {
            console.log(msg);
        });
    }

    let url = new URL(window.location.href);
    let page = url.searchParams.get('page');
    
    let threadArr = [];
    $.ajax({
        url : 'thread_order.csv',
        method  : 'GET'
    }).done(function(data) {
        threadArr = data.split(',');
    }).fail(function(msg) {
        console.log(msg);
    }).then(function() {
        $('#board').html('');
        let threadNo = 0;
        if (fullToggle) {
            for (let i = 0; i < threadArr.length; i++) {
                addBoardThread(threadArr, i);
            }
        } else {
            for (let i = 10 * (page-1); i < 10 * page; i++) {
                addBoardThread(threadArr, i);
            }
        }
    });
}

My current issue is that when I try loading all the board’s thread into one page (when fullToggle is true), I get a 500 server message, but in the alternate case, I get a 200 server message.
This issue is from the ajax request in the “addBoardThread” function.

This is the object that gets returned from the ajax request when I receive the 500 server message

Object { readyState: 4, getResponseHeader: getResponseHeader(e), getAllResponseHeaders: getAllResponseHeaders(), setRequestHeader: setRequestHeader(e, t), overrideMimeType: overrideMimeType(e), statusCode: statusCode(e), abort: abort(e), state: state(), always: always(), catch: catch(e), … }
​
abort: function abort(e)
​
always: function always()
​
catch: function catch(e)
​
done: function add()
​
fail: function add()
​
getAllResponseHeaders: function getAllResponseHeaders()
​
getResponseHeader: function getResponseHeader(e)
​
overrideMimeType: function overrideMimeType(e)
​
pipe: function pipe()
​
progress: function add()
​
promise: function promise(e)
​
readyState: 4
​
responseText: "<hr/><div class=thread-details>nt<span class=thread-details data-tooltip=Replies>4</span>nt/nt<span class=thread-details data-tooltip=Files>2</span>nt/nt<span class=thread-details data-tooltip=Page>1</span>n</div><hr/><div class=board-thread id=board-thread-13>"
​
setRequestHeader: function setRequestHeader(e, t)
​
state: function state()
​
status: 500
​
statusCode: function statusCode(e)
​
statusText: "Internal Server Error"
​
then: function then(t, n, r)

I receive this error for every thread that is in the board when I send the ajax request only when trying to get all threads.

I just try to send a post request with the most up-to-date thread array, the index of what thread I want to extract and the return address, so I know where to draw from.

This code works perfectly well when selecting only a page of threads, but requesting all breaks the code