Fix sitemap error in webmaster?

Question

Search Engine Optimization

Hello, Yandex Webmaster began to swear at the sitemap:

The site is on WordPress, the map is generated by Yoast. I see that there is an extra stick / in the line before gymbalance, but I can’t imagine how to fix it, where is this error? Checked the alleged pages, it's not there.
Signed that p. 1567, but how to use it? Where to see? I turned on to look at the code of the page of this map, but there is something wrong in this line:

Yesterday I tried to figure it out, completely deleted this file, pressed check, but the error remained:

What else to check? How to fix?

Answer 1

Well, here I see 2 options:
1) write to Yoast technical support
2) use another module for the sitemap, which will not have this bug

Answer 2

Replace Yoast with Rank Math. Migration from Yoast is there, much more convenient.