Hello @marnyscom,
Thanks for reaching out regarding your XML sitemaps.
We visited the sitemap at https://marnys.com.eg/sitemap_index.xml and we can confirm the error. This is usually caused by empty whitespace or a blank line that appears due to a conflict with another plugin or your theme. Most likely, there is an empty space or a blank line before or after the closing PHP opening or closing tag, which shouldn’t be there.
You can narrow down the exact source of conflict by performing a conflict check. Once you have identified whether your theme or a plugin causes the issue, please contact the developers of that theme or plugin for assistance in finding and removing the whitespace.
We are going ahead and marking this issue as resolved due to inactivity. If you require any further assistance please create a new issue.
