Error message

Deprecated function: Return type of Drupal\bg_img_field\Component\Render\CSSSnippet::jsonSerialize() should either be compatible with JsonSerializable::jsonSerialize(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in include() (line 10 of modules/contrib/bg_img_field/src/Component/Render/CSSSnippet.php).

include('/home/musiccomp/public_html/modules/contrib/bg_img_field/src/Component/Render/CSSSnippet.php') (Line: 571)
Composer\Autoload\includeFile('/home/musiccomp/public_html/modules/contrib/bg_img_field/src/Component/Render/CSSSnippet.php') (Line: 428)
Composer\Autoload\ClassLoader->loadClass('Drupal\bg_img_field\Component\Render\CSSSnippet')
unserialize('a:5:{s:7:"#markup";O:25:"Drupal\Core\Render\Markup":1:{s:9:"*string";s:1205:"



  
  
    Brendan Magill
            <em>Zeedot</em>
Brendan Magill is a junior at Harwood Union High School. He has been composing since 5th grade with Music-COMP. He plays trumpet in the band and jazz band, and also enjoys running, skiing, and listening to all genres of music.

      
            
  
      
            

      
  

      
  

      
      
    
  

";}s:9:"#attached";a:3:{s:14:"html_head_link";a:2:{i:0;a:1:{i:0;a:2:{s:3:"rel";s:9:"canonical";s:4:"href";s:61:"https://music-comp.org/featured-young-composer/brendan-magill";}}i:1;a:1:{i:0;a:2:{s:3:"rel";s:9:"shortlink";s:4:"href";s:31:"https://music-comp.org/node/537";}}}s:7:"library";a:1:{i:0;s:22:"media/oembed.formatter";}s:9:"html_head";a:1:{i:0;a:2:{i:0;a:3:{s:4:"#tag";s:5:"style";s:6:"#value";O:47:"Drupal\bg_img_field\Component\Render\CSSSnippet":1:{s:9:"*string";s:252:"#header_second{background-repeat: inherit;background-size: cover;background-position: inherit;}#header_second {background-image: url(https://music-comp.org/sites/default/files/styles/header_image_style/public/2021-11/default-banner.jpg?itok=gO-p9Vxv);}";}s:6:"#cache";a:2:{s:4:"tags";a:3:{i:0;s:42:"config:responsive_image.styles.wide_banner";i:1;s:30:"config:image.style.max_325x325";i:2;s:37:"config:image.style.header_image_style";}s:8:"contexts";a:0:{}}}i:1;s:43:"picture-background-formatter-#header_second";}}}s:6:"#cache";a:3:{s:8:"contexts";a:6:{i:0;s:8:"url.site";i:1;s:28:"languages:language_interface";i:2;s:5:"theme";i:3;s:16:"user.permissions";i:5;s:24:"user.roles:authenticated";i:9;s:8:"timezone";}s:4:"tags";a:9:{i:0;s:9:"node_view";i:1;s:8:"node:537";i:2;s:27:"config:flag.flag.email_node";i:3;s:31:"config:flag.flag.subscribe_node";i:4;s:10:"media_view";i:5;s:8:"media:35";i:6;s:21:"config:media.settings";i:7;s:30:"config:filter.format.full_html";i:8;s:6:"user:1";}s:7:"max-age";i:-1;}s:17:"#cache_properties";a:1:{i:0;s:6:"#title";}s:6:"#title";O:25:"Drupal\Core\Render\Markup":1:{s:9:"*string";s:28:"Brendan Magill
";}}') (Line: 167)
Drupal\Core\Cache\DatabaseBackend->prepareItem(Object, ) (Line: 122)
Drupal\Core\Cache\DatabaseBackend->getMultiple(Array, ) (Line: 92)
Drupal\Core\Cache\DatabaseBackend->get('entity_view:node:537:full:[languages:language_interface]=en:[theme]=basic:[timezone]=America/New_York:[url.site]=https://music-comp.org:[user.permissions]=50180d94e8d96516dbe6302cbf3e4bb7d5dfa52d192045d0382d704b4851b970:[user.roles:authenticated]=1') (Line: 71)
Drupal\Core\Render\RenderCache->get(Array) (Line: 109)
Drupal\Core\Render\PlaceholderingRenderCache->get(Array) (Line: 77)
Drupal\Core\Render\RenderCache->get(Array) (Line: 109)
Drupal\Core\Render\PlaceholderingRenderCache->get(Array) (Line: 273)
Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 204)
Drupal\Core\Render\Renderer->render(Array, ) (Line: 242)
Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() (Line: 580)
Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 243)
Drupal\Core\Render\MainContent\HtmlRenderer->prepare(Array, Object, Object) (Line: 132)
Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse(Array, Object, Object) (Line: 90)
Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray(Object, 'kernel.view', Object)
call_user_func(Array, Object, 'kernel.view', Object) (Line: 142)
Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch(Object, 'kernel.view') (Line: 174)
Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 81)
Symfony\Component\HttpKernel\HttpKernel->handle(Object, 1, 1) (Line: 58)
Drupal\Core\StackMiddleware\Session->handle(Object, 1, 1) (Line: 48)
Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object, 1, 1) (Line: 191)
Drupal\page_cache\StackMiddleware\PageCache->fetch(Object, 1, 1) (Line: 128)
Drupal\page_cache\StackMiddleware\PageCache->lookup(Object, 1, 1) (Line: 82)
Drupal\page_cache\StackMiddleware\PageCache->handle(Object, 1, 1) (Line: 48)
Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 51)
Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 23)
Stack\StackedHttpKernel->handle(Object, 1, 1) (Line: 713)
Drupal\Core\DrupalKernel->handle(Object) (Line: 19)