question about sitemap

Hi,
no but you can change this value using this hook:

https://www.seopress.org/support/hooks/filter-single-post-type-xml-sitemap-query/

In the example, change the posts_per_page value to “-1” (without quotes).

Make sure to test your XML sitemap after making this change!

My friend, I’m a layman, where do I put this hook?

unfortunately it does not seem to work on my site (https://ibb.co/dHNcTe) It gives the following error:

(I.e.
Could not read sitemap
General HTTP error
We encountered an error while trying to access your Sitemap. Make sure the Sitemap follows our guidelines and can be accessed from the location you provided. Then resubmit it.

About the error in Search Console, an update will be published due to changes with new version of Google SC.