Already did. Different website, different plugins. No error in “sitemap” section on gsc. I have only this “problem” when I fetch manually urlsYou are using different sitemap plugins across websites, ensure that each plugin is properly configured and updated to the latest version. Sometimes, older versions may have bugs or compatibility issues with newer standards.
You can use Yoast Plugin to fix this issue regarding sitemap . and validate your sitemap using the GSC testing tool to check for any syntax errors.
All fine, my posts are correctly indexed.Maybe check your robots.txt file and see if there's any restrictions