I want to remove individual css files, code not working!

[tutonn]

Hi everyone!
Please help me correct the codes below. after using this code, I got an error message with an error page

"0 Undefined method unregisterasset in class Joomla\CMS\WebAsset\WebAssetManager"

$wa = $this->getWebAssetManager();

// Remove individual CSS files
$wa->unregisterAsset('main.css');
$wa->unregisterAsset('jquery.bootstrap-touchspin.css');
$wa->unregisterAsset('jquery-ui.slider.min.css');
$wa->unregisterAsset('colors_standard.min.css');
$wa->unregisterAsset('template.min.css');
$wa->unregisterAsset('joomla-alert.min.css');

Please correct me.

Thanks in advance. it is also urgent for me too.

[SharkyKZ]

See answer on JSE https://joomla.stackexchange.com/a/33728. Though randomly disabling assets will cause parts of your site to break.

[tutonn]

Thanks for your quick reply. But this url does not help me. I appreciate your help, thanks again.

[carlitorweb]

Thanks for your quick reply. But this url does not help me. I appreciate your help, thanks again.

You should read again, because in that link is where you will find the answer. The method unregisterAsset is not part of the class WebAssetManager. You need use instead disableAsset

[tutonn]

Thanks, Carlitorweb, for your kind reply. I will try this. Sorry to reply so late.

[SharkyKZ]

disableAsset() may not work correctly, as mentioned in the answer. You also need to use correct asset names, not file names. You can see asset names by enabling debug and then inspecting data-asset-name attribute in <link> and <script> tags.

[tutonn]

Dear SharkyKZ, Thanks a lot for your kind reply.