PHP Fatal error : Call to a member function bind_param() on a non-object

<b>Fatal error</b>: Call to a member function bind_param() 
on a non-object in <b>/Applications/XAMPP/xamppfiles/htdocs/app/php/insertData.php</b>
on line <b>29</b><br />

If you get the above kind of error message in PHP page that has a MySQLi or PDO prepare statement then make sure that the query you have written is correct, most of the time this error is encountered when the query is not well-formatted, check that the fields you have specified are correct and exist in the database table structure.

If you are trying to make another prepare query then make sure that you first close the statement you executed first before creating the next statement to execute.

You can also check what boolean value does var_dump($stmt); returns to debug the query.