I'm getting the invalid JSON error:
DataTables warning: table id={id} - Invalid JSON response. For more information about this error, please see http://datatables.net/tn/1

I visited the help link: http://datatables.net/tn/1 and verified the JSON is valid using https://jsonlint.com/ as suggested. To validate, I copied the exact response from the Chrome Console, pasted into jsonlint and hit "Validate JSON" without any modification.

I then decided to hardcode the JSON response by copying it directly from Chrome developer tools, replacing the json_encode($myARR) line (This is PHP). And oddly enough, it works perfectly fine.

I'm thinking there is something like whitespace when my response is dynamically generated (although I've checked this in particular). Has anyone experienced this? What was the cause/fix?

For reference:

Here is the slightly modified JSON. I had to modify some values in order to post. (Note, I validated against JSONLint before modifying anything):

{
    "draw": 1,
    "recordsTotal": 10581,
    "recordsFiltered": 10581,
    "data": [
        ["", "VALUE A", "ZEE100", "20190723", ".1200", "112", "US", "30000", "99999999", "30000", "", "0", ""],
        ["", "VALUE B", "ZEE100", "20190723", ".1420", "112", "US", "30000", "99999999", "30000", "", "0", ""],
        ["", "VALUE C", "ZEE100", "20190416", ".1570", "84", "US", "35000", "99999999", "35000", "", "0", ""],
        ["", "VALUE D", "ZEE100", "20190723", ".0900", "112", "US", "30000", "99999999", "30000", "", "0", ""],
        ["", "VALUE E", "ZEE100", "20190723", ".1350", "112", "US", "30000", "99999999", "30000", "", "0", ""],
        ["", "VALUE F", "ZEE100", "20190723", ".1300", "112", "US", "30000", "99999999", "30000", "", "0", ""],
        ["", "VALUE G", "ZEE100", "20190723", ".1200", "112", "US", "30000", "99999999", "30000", "", "0", ""],
        ["", "VALUE H", "ZEE100", "20190723", ".0960", "112", "US", "30000", "99999999", "30000", "", "0", ""],
        ["", "VALUE I", "ZEE100", "20190723", ".0900", "112", "US", "30000", "99999999", "30000", "", "0", ""],
        ["", "VALUE J", "ZEE100", "20191119", "4322.0000", "98", "US", "16", "99999999", "16", "", "0", ""]
    ]
}