请注意./libraries/dbi/DBIMysqli.class.php#522

I just have installed MySQL Server version: 5.7.23-0ubuntu0.16.04.1 - (Ubuntu) and phpMyAdmin Version information: 4.5.4.1deb2ubuntu2 When I am accessing database through phpMyAdmin, it is showing warning message

Notice in ./libraries/dbi/DBIMysqli.class.php#522

Can anyone help please?

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You just need to add one thing in file ./libraries/dbi/DBIMysqli.class.php. Below is the code to add line no 522

Before adding fixing code

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After Adding fixing code

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I think this will help you to fix that error messages issue.