Cannot upload and attach images to courses with course builder

I’m unable to upload an image or video using course builder. It says “Validation Error”.

Would appreciate an assistance

Looking at the debug log:

[04-Sep-2024 07:29:51 UTC] PHP Warning: Attempt to read property “post_parent” on null in C:\inetpub\vhosts\hansenwellness.co.za\httpdocs\wp-includes\link-template.php on line 479
[04-Sep-2024 07:29:51 UTC] PHP Warning: Attempt to read property “post_name” on null in C:\inetpub\vhosts\hansenwellness.co.za\httpdocs\wp-includes\link-template.php on line 517
[04-Sep-2024 07:29:51 UTC] PHP Deprecated: rtrim(): Passing null to parameter #1 ($string) of type string is deprecated in C:\inetpub\vhosts\hansenwellness.co.za\httpdocs\wp-includes\formatting.php on line 2819
[04-Sep-2024 07:29:51 UTC] PHP Warning: Attempt to read property “ID” on null in C:\inetpub\vhosts\hansenwellness.co.za\httpdocs\wp-includes\link-template.php on line 534

Running JS debug it breaks on main.js line:
return JSON.parse(e)
SyntaxError: Unexpected token ‘<‘

It seems to actually upload the image correctly but then it doesn’t attach it to the post/course because the response indicates that the Document has moved?

JSON Object:
{
“e”: “Document Moved\nObject MovedThis document may be found 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“t”: {
“silentJSONParsing”: true,
“forcedJSONParsing”: true,
“clarifyTimeoutError”: false
},
“n”: true,
“r”: false
}

The page I need help with: [log in to see the link]