Angular fileUpload problem

We have angular made upload button, that uploads to a files API needed documents. Sometimes, appears to do it, appears to save, but when we end saving that process, the document is not charged.
What´s the best approach to upload files and wait for it done??

Thanks in advance


Do you receive any error log? I do not understand what you mean “document not charged”? Have you used the method: uploadFile correctly ([WebUI] Upload File | Katalon Docs)