PHP Version

8.3

CodeIgniter4 Version

4.6.3

CodeIgniter4 Installation Method

Composer (using codeigniter4/appstarter)

Which operating systems have you tested for this bug?

Linux

Which server did you use?

apache

Database

No response

What happened?

I get this error in the browser console when using the debug toolbar to highlight views:

Uncaught TypeError: Cannot read properties of null (reading 'nodeName')
    at getValidElementInner (<anonymous>:320:45)
    at getValidElement (<anonymous>:356:25)
    at showHints (<anonymous>:373:36)
    at btn.parentNode.onclick (<anonymous>:513:17)

getValidElement calls getValidElementInner with nodeElement.previousElementSibling which is null when nodeElement is the comment node for "DEBUG-VIEW START 1 APPPATH/Views/bar.php"

As a result, the view highlighter gets stuck in an invalid state and further clicks on the button keep adding highlight elements and logging more errors.

Steps to Reproduce

app/Views/foo.php: <div><?= view('bar') ?></div>
app/Views/bar.php: <script></script>
any controller: return view('foo');

Render the view, then click on "Views" in the debug toolbar

Expected Output

No error

Anything else?

No response