If you are installing new Ubuntu 16.04 LTS or upgrading from your older Ubuntu installation then you will get an error like “phpMyAdmin – Error – The mbstring extension is missing. Please check your PHP configuration”. This error can happen on browser for your phpmyadmin access after installation or upgrade to Ubuntu 16.04.
The error should be like the image shown below.
Here is the solution for the this particular error. Just open your terminal by using Ctrl+Alt+T and run following three commands.