phpMyAdmin – Config storage is not complete + Conn controluser failed

Here is how I solved the:

The phpMyAdmin configuration storage is not completely configured, some extended features have been deactivated.  To find out why click here.

and:

Connection for the controluser as defined in your configuration failed. 

Looked here for the post on how to fix it.

For my Ubuntu 16 I used this code:

sudo wget --no-check-certificate https://raw.githubusercontent.com/skurudo/phpmyadmin-fixer/master/pma-ubuntu.sh && sudo chmod +x pma-ubuntu.sh && sudo ./pma-ubuntu.sh 

Good luck.