Problem with search form

[Mijo]

Hello, I'm having a problem with search form on my website, it throw me an error "Error: Exception: Field does not exist: body (in C:\xampp\htdocs\testweb\wire\core\PageFinder.php line 993)"

My search.php (template) is: 

<?php
	$q = $sanitizer->text($input->get->q); 

	if($q) { 

		$q = $sanitizer->selectorValue($q); 

		$selector = "title|body~=$q, limit=50"; 

		if($user->isLoggedin()) $selector .= ", has_parent!=2"; 

		$matches = $pages->find($selector); 

		if($matches->count) {

			echo "<h2>Found $matches->count page(s) matching your query:</h2>";

			echo "<ul class='nav'>";

			foreach($matches as $match) {
				echo "<li><a href='$match->url'>$match->title</a>";
				echo "<div class='summary'>$match->summary</div></li>";
			}

			echo "</ul>";


		} else {

			echo "<h2>Sorry, no results were found.</h2>";
		}

	} else {

		echo "<h2>Please enter a search term in the search box (upper right corner)</h2>";
	}
?>

My form is:

  <form class='search' action='<?php echo $pages->get('template=search')->url; ?>' method='get'>
		<label for='search' class='visually-hidden'>Search:</label>
		<input type='text' name='q' id='search' placeholder='Search' value='' />
		<button type='submit' name='submit' class='visually-hidden'>Search</button>
	</form>

This is example from Minimal Site Profile, but I can not make it work, can you please give me some advice,.  thank you very much.

[DaveP]

Hmmm, there's nothing obvious.

What happens if you echo $selector?

[Roberts R]

Does body field exists?

[Mijo]

10 minutes ago, Roberts R said:

Does body field exists?

Ohh thank you, my mistake  I did not have a body field, now everything works properly,