Debug is NOT using the template position

I am logged as Admin.

How to solve this?

code is in line 346
echo str_replace('</body>', $debugBarRenderer->renderHead() . $debugBarRenderer->render() . '</body>', $contents);

and the whole code is present before </body> in page source.

Do you have any errors in the browser's console?

Many

Uncaught ReferenceError: jQuery is not defined
    <anonymous> http://localhost:8888/newfolder/joomla40/media/vendor/debugbar/debugbar.js:4
debugbar.js:4:5
10:55:18.428
Uncaught TypeError: PhpDebugBar.utils is undefined
    <anonymous> http://localhost:8888/newfolder/joomla40/media/vendor/debugbar/widgets.js:14
    <anonymous> http://localhost:8888/newfolder/joomla40/media/vendor/debugbar/widgets.js:583
widgets.js:14:18
10:55:18.428
Uncaught TypeError: PhpDebugBar.Widget is undefined
    <anonymous> http://localhost:8888/newfolder/joomla40/media/vendor/debugbar/openhandler.js:13
    <anonymous> http://localhost:8888/newfolder/joomla40/media/vendor/debugbar/openhandler.js:202
openhandler.js:13:5
10:55:18.428
Uncaught TypeError: PhpDebugBar.utils is undefined
    <anonymous> http://localhost:8888/newfolder/joomla40/media/plg_system_debug/widgets/info/widget.min.js:1
    <anonymous> http://localhost:8888/newfolder/joomla40/media/plg_system_debug/widgets/info/widget.min.js:1
widget.min.js:1:20
10:55:18.428
Uncaught TypeError: PhpDebugBar.utils is undefined
    <anonymous> http://localhost:8888/newfolder/joomla40/media/plg_system_debug/widgets/sqlqueries/widget.min.js:1
    <anonymous> http://localhost:8888/newfolder/joomla40/media/plg_system_debug/widgets/sqlqueries/widget.min.js:1
widget.min.js:1:20

etc.

jQuery is not defined

There you go. Add before

JHtml::_('jquery.framework');

You are quoting staging.
I am speaking of 4.0

If I add HTMLHelper::_('jquery.framework'); on top of error.php, then it works.

Weird the jQuery is defined as dependency here:

Do you have a js file loaded in the browser with path media/plg_system_debug/js/debug.min.js ?

No, in index.php (where it works) as well as error.php
I have at bottom of page
<script type="text/javascript" src="/newfolder/joomla40/media/vendor/debugbar/debugbar.js" defer></script>

EDIT: In fact I have them in index.php, not in error.php

It worked for me yesterday, without errors. Today not tested.
Any changes in 4.0-dev branch happen recently? :)

@Fedik, have you tested with error.php?

ahh, I misunderstood, sorry,
yeah it broken on 404 page

okay I see,
That because it is DocumentError and it a different Document instance from initial.
debug.js attached to original DocuemtHtml, but "on error" the error handler proceed DocumentError

I will try to look later, how to fix that.

You mean
* @todo Change this renderer to use JDocumentHtml instead of JDocumentError, the latter is only used for B/C at this time
in
/libraries/src/Error/Renderer/HtmlRenderer.php

?

Nope, this one https://github.com/joomla/joomla-cms/blob/4.0-dev/libraries/src/Document/ErrorDocument.php

hm, or maybe Yes
well, it confusing 😄

but the document instance changes in

need to change how the plugin attach the script

OK

please test #32358