I am trying to upload an excel document or image to Alfresco community from Java using a Base64 encoded string. While I can upload the document, Alfresco is not able to preview it and when I download the content and attempt to view it. I get a response saying the document is corrupted. So far, I have issues uploading excels and images. I have not tried .doc or .docx. I don't have this issue with text documents(.txt) those behave normally. Would someone kindly assist or provide an example?