phpMyAdmin error - #1273 - Unknown collation: 'utf8mb4_general_ci' 1

Problem

After open  (log in or visit) PhpMyAdmin on the localhost on my PC and then I get the message

Error

MySQL said:

#1273 - Unknown collation: 'utf8mb4_general_ci'

Solution

To delete only cookies on the Google Chrome:

1. hold down Ctrl+Shift+Delete on the keyboard.
2. remove all check boxes except for "Cookies and other site data" of course.
3. use the "Time range" drop down on top to select "Last hour" or other appropriate time range.
4. click "Clear data" button.

To delete only cookies on the Mozilla Firefox:

1. hold down Ctrl+Shift+Delete on the keyboard.
2. remove all check boxes except for "Cookies" of course
3. use the "Time range to clear:" drop down on top to select "from the beginning of time"
4. click "Clear browsing data" or "Clear Now" button.

Bibliography

https://support.google.com/chrome

https://support.mozilla.org/en-US/

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