404 on generating site map and debug

Hi
I have a fresh install of Joomla 4 and when I click the generating site map and debug buttons I get a 404 error. Any idea what might cause this?

Thanks 

Christina

Hi Christina,
You need to have a look at server side error.log for better understanding of what is wrong. My assumption lies in hosting limits which need to be increased (maybe memory_limit). the log will help to understand.