Velo coding issues

I built this page 3 months ago and it is working fine. All of a sudden the file upload is no more working and files are no more submitted to collections. Please help me what is the way out;

The page is https://www.dtfsupplies.co.uk/trade-artwork-upload

The error I get when testing is;

“root”: {

“insertId”:“…EFhdDwh6p8AehFbLy7bo1R”
“timestamp”:“2022-11-04T18:38:35.247Z”

“labels”: { “siteUrl”:“https://www.dtfsupplies.co.uk
“revision”:“1577”
“namespace”:“Velo”
“tenantId”:“d110ed10-3f72-4d0d-8534-4e718e9e1c73”
“viewMode”:“Site”
}

“operation”: { “id”:“…Eq.OrgQS0CUtGhzzKEx2n.”
“producer”:“https://www.dtfsupplies.co.uk
}

“jsonPayload”: { “message”:“Error at i (https://static.parastorage.com/services/wix-code-viewer-app/1.1479.555/app.js:2:10688)”
}
“severity”:“ERROR”
“receiveTimestamp”:“2022-11-04T18:38:36.529Z”
}

I think the problem is with wixdata been imported. I am still confused what could be wrong.