Migrating angular tinymce from v6 to v8 resolve is not working

I am igrating my application from angular v15 to angular v18 for that I have also updated my tinymce package. But now stuck at below. image uploader is not working

the below function was working fine

function (blobInfo, success, failure) {
const xhr = new XMLHttpRequest();
xhr.open('POST', ${ environment.SITE_BASE_URL }filemanager / filemanager / upload.php);
xhr.onload = function () {
if (xhr.status !== 200) {
failure('HTTP Error: ' + xhr.status);
return;
}
const json = JSON.parse(xhr.responseText);
if (!json?.files[0]?.url) {
failure('Invalid JSON: ' + xhr.responseText);
return;
}
success(json?.files[0]?.url);
};
xhr.onerror = function () {
failure('Image upload failed due to a XHR error');
};

const formData = new FormData();
formData.append('files[]', blobInfo.blob(), blobInfo.filename());
formData.append('fldr', '');
xhr.withCredentials = true;
xhr.send(formData);
}


In latest version I replace the above with below

(blobInfo, progress) => new Promise((resolve, reject) => {
const xhr = new XMLHttpRequest();
xhr.open('POST', ${environment.SITE_BASE_URL}filemanager/filemanager/upload.php);

xhr.onload = () => {
if (xhr.status !== 200) {
reject('HTTP Error: ' + xhr.status);
return;
}

const json = JSON.parse(xhr.responseText);
console.log(json);
if (!json?.files[0]?.url) {
reject('Invalid JSON: ' + xhr.responseText);
return;
}

console.log(json?.files[0]?.url);
resolve('https://apiss.kualiteestaging.com/files/mceclip1.png');
};

xhr.onerror = (error) => {
console.log(error);
reject('Image upload failed due to a XHR Transport error. Code: ' + xhr.status);
};

const formData = new FormData();
formData.append('fldr', '');
formData.append('files[]', blobInfo.blob(), blobInfo.filename());

xhr.send(formData);
})


but on resolving the url is not getting placed but it was happening with first version. Is I am doing something wrong or missing or its a bug

Environment

"@tinymce/tinymce-angular": "^8.0.1",

"@angular/cdk": "^18.2.14",

"@angular/common": "^18.2.13",

"@angular/compiler": "^18.2.13",

"@angular/core": "^18.2.13",

"@angular/forms": "^18.2.13",

"@angular/material": "^18.2.14",

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