I was getting an error message when I accessed phpMyAdmin. The error was:
"The mbstring PHP extension was not found and you seem to be using a multibyte charset. Without the mbstring extension phpMyAdmin is unable to split strings correctly and it may result in unexpected results.
This error means that mbstring PHP extension is not enabled or installed. In my case it was not enabled.
To resolve this I had to enable it in my php.ini file. Open your php.ini file and un-comment these lines:
Restart your Linux server and this error will go away.