Unnecessary double slash in the sitemap.xml

[mac13]

The website error checking website (ahrefs.com) shows me over 6,000 invalid double-slash urls and over 13,000 double-slash links in the url. I checked the html and css files generated by WWB and did not find any errors indicated in issues. I found unnecessary double slash only in the sitemap.xml file generated by WWB (https://wasowscy.net/sitemap.xml), eg.: https://wasowscy.net//PL.html - why does this happen?
The page displays correctly online.
Link to the indicated errors on the website:
https://app.ahrefs.com/site-audit/48139 ... 3a17-d0f4- 11e7-8ed1-001e67ed4656&sorting=-pageRating
Link to the project: https://wasowscy.net/wasowscy.net.wbs
Please advise how to fix this (apart from manually correcting each line in the sitemap.xml file).

[Pablo]

You have specified an invalid URL in the sitemap settings
It should be: https://wasowscy.net/

[mac13]

Thank You, Pablo.
Chcked & changed.
Works.