[Plugin: WordPress SEO by Yoast] Post Sitemap showing Blank

I was just having the same problem.
Safari was showing a blank page but I could see the xml content in the source view.

I loaded the site map link into Firefox and it came up with parsing error caused from an “&” I used in one of the images title tag. I used “&” instead of “and” in the description.

I edit the offending img title tag that caused the XML error, updated the page and then reloaded the xml file.

I had 5 pages where I used an “&” in place of “and”. I edited each and then reloaded the page (since the site map is regenerated each time).

Once I edited those files, taking out the “&” in the images title tags, the XML file is now showing up again in the browser.

I just checked your site map and it looks like its the same issue.
I can see the code in source view and if I load in Firefox I get the following error.

XML Parsing Error: not well-formed
Location: https://www.wpbeginner.com/post-sitemap.xml
Line Number 98, Column 24:<image:caption>Ben & Jerrys</image:caption>
——————————————–^

It looks like the “&” in Ben & Jerrys is your culprit…. (the arrow in Firefox is pointing to the space after the “&”)

Worked for me, might work for you, good luck!

Thanks for the help. Yes that seemed to fix it. Yoast told me over twitter that this is some sort of encoding issue. He will fix it in the next release.