rm: cannot remove 'xxx': Permission denied

[erbao2001]

I am a super novice, as shown in the picture, how should this problem be solved?
According to my analysis, the user I use is "deployer", and the owner of these cache files is www and the permission is 755. It may be caused by this reason. How to solve it?

What I've done:

sudo usermod -aG www deployer
sudo chown deployer:www /www/wwwroot
sudo chmod g+s /www/wwwroot

Many thanks!

[erbao2001]

another question