phpmyadmin web app permissions are incorrect

Hello Friends,
Today, I logged into my phpmyadmin web portal and checked whether it ran correctly. Then, it showed me this error:

Code:

The $cfg['TempDir'] (/var/lib/phpmyadmin/tmp/) is not accessible.
phpMyAdmin is not able to cache templates and will be slow because of this.

I have already changed ownership of /var/lib/phpmyadmin/ to www-data:www-data recursively but the error is still there.

Please advice.

 

perhaps, the same issue here
https://forum.howtoforge.com/threads/cfg-tempdir-var-lib-phpmyadmin-tmp-1-is-not-accessible.90170/

 

I run this:
cd /var/lib/phpmyadmin/
Then, change permission of tmp/ to 777
No more error message!