Notice: Undefined index:
I created a result page and then a search page using Webassist DataAssist Search Wizard.
When I run the search, I get the following message on the results page.
Notice: Undefined index: CountType in /home/w72w9xoqmrbx/public_html/birdlists/BirdListResultsPage.php on line 13
Here are Lines 11- 13
$rsBirdLists = new WA_MySQLi_RS("rsBirdLists",$siteguide2018,10);
$rsBirdLists->setQuery("SELECT * FROM birdlists WHERE CountType = ?");
$rsBirdLists->bindParam("s", "".($_GET['CountType']) ."", "-1"); //colname
$rsBirdLists->execute();
What is causing this?