Please make sure that “/” is writable by the web-server. [Magento 2.4 Sitemap]

[Krus_Leung]

okay Mr. Craig, I found the solution by tests and I am still wondering if this is the correct way to solve it. Please reply me to let general know about it. @digitalstartup

My Solution:

Step 0. (Optional)

Change back the owner of /var/www/html to the www-data

sudo chown -R www-data:www-data /var/www/html

This Step 0 is optional because I can’t make Step 1 successfully when the owner of /var/www/html is user “magento2” which is not superuser.

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Step 1.
Run command

sudo chmod -R 775 /var/www/html

as the “superuser” from within any directory first, -R is missing at the below link, I think it’s quite important in this case:

Can't setup sitemap

I’m an idiot. It was late when I read your post last night. I miss read the image. The folder is fine as it is. It’s the Permissions which needs changing. Try running the below command as the “superuser” from within any directory: sudo chmod 775 /var/www/html Explanation Your /var/www/html folder is currently set to 755. This means that magento user can create folders/files but not www-data. When Magento creates new files, they are created as www-data. Therefore, it doesn’t have the permissi…

The documents’ name turn Green if they changed into 775!

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Step 2.
Final Step, do remember to change the owner of /var/www/html back to “magento2” by command

sudo chown magento2:www-data /var/www/html

Notice (magento2 = username of Magento databases’ owner which I chose at the beginning we set up our Magento), it equals to character of user “magento” in Ubuntu Server at How to install Magento 2.4.5-p1 and build a web server (updated)

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Result:

We did it!