为什么我的wp_enQueue_style()不起作用？

我是wordpress的新手，第一次尝试在localhost上开发一个儿童主题。我正在尝试加载样式。css在函数中使用此代码。php。这就是全部功能。php文件：

<?php 

//registers styles in header
function load_stylesheets()
    {   
        
        wp_register_style(\'bootstrap\', get_stylesheet_directory_uri().\'/assets/css/bootstrap.css\', array(), false, \'all\');
        wp_enqueue_style( \'bootstrap\');
        
        wp_register_style(\'style\', get_stylesheet_directory_uri().\'/style.css\', array(), false, \'all\');
        wp_enqueue_style(\'style\');
        

    }
add_action(\'wp_enqueue_scripts\', \'load_stylesheets\');
    
?>

我的风格。css文件位于我的主目录中，其中包含此样式

body {background-color:black;}

我的标题。php文件为

<!DOCTYPE html>
<head>
    <?php wp_head();?>
</head> 
<body <?php body_class();?>>

我的页脚。php文件为

<footer>
</footer>

<?php wp_footer();?>

</body>
</html>

当我检查我的主页源代码时，它显示了我的风格。css正在加载，但我没有看到应用的样式（黑色背景）。

<style type="text/css">
img.wp-smiley,
img.emoji {
    display: inline !important;
    border: none !important;
    box-shadow: none !important;
    height: 1em !important;
    width: 1em !important;
    margin: 0 .07em !important;
    vertical-align: -0.1em !important;
    background: none !important;
    padding: 0 !important;
}
</style>
    <link rel=\'stylesheet\' id=\'wp-block-library-css\'  href=\'http://homepage:8888/wp-includes/css/dist/block-library/style.min.css?ver=5.4.2\' type=\'text/css\' media=\'all\' />
<link rel=\'stylesheet\' id=\'bootstrap-css\'  href=\'http://homepage:8888/wp-content/themes/cc/assets/css/bootstrap.css?ver=5.4.2\' type=\'text/css\' media=\'all\' />
<link rel=\'stylesheet\' id=\'style-css\'  href=\'http://homepage:8888/wp-content/themes/cc/style.css?ver=5.4.2\' type=\'text/css\' media=\'all\' />
<link rel=\'https://api.w.org/\' href=\'http://homepage:8888/wp-json/\' />
<link rel="EditURI" type="application/rsd+xml" title="RSD" href="http://homepage:8888/xmlrpc.php?rsd" />
<link rel="wlwmanifest" type="application/wlwmanifest+xml" href="http://homepage:8888/wp-includes/wlwmanifest.xml" /> 
<meta name="generator" content="WordPress 5.4.2" />
<link rel="canonical" href="http://homepage:8888/" />
<link rel=\'shortlink\' href=\'http://homepage:8888/\' />
<link rel="alternate" type="application/json+oembed" href="http://homepage:8888/wp-json/oembed/1.0/embed?url=http%3A%2F%homepage%3A8888%2F" />
<link rel="alternate" type="text/xml+oembed" href="http://homepage:8888/wp-json/oembed/1.0/embed?url=http%3A%2F%homepage%3A8888%2F&#038;format=xml" />

当我点击；http://homepage:8888/wp-内容/主题/抄送/风格。css？版本=5.4.2“；看来我的风格；正文{背景色：黑色；}"E；正在显示，但我没有看到它应用于主页。看起来它被引导程序的重新启动所覆盖。scss文件，我从css文件夹中删除了它，所以我不知道为什么它仍在显示。是否也有理由添加；版本=5.4.2“；到最后？

编辑：

在发布此消息之前，我已尝试刷新并检查了调试日志。调试日志上说了这句话，但我仍然不明白它在说什么，我正在关注我的教程视频。

      thrown in /Applications/MAMP/htdocs/homepage.com/wp-content/themes/homepage/template-parts/content-archive.php on line 27
[28-Jul-2020 04:58:53 UTC] PHP Fatal error:  Uncaught Error: Call to undefined function the_exerpt() in /Applications/MAMP/htdocs/homepage.com/wp-content/themes/homepage/template-parts/content-archive.php:27
Stack trace:
#0 /Applications/MAMP/htdocs/homepage.com/wp-includes/template.php(725): require()
#1 /Applications/MAMP/htdocs/homepage.com/wp-includes/template.php(672): load_template(\'/Applications/M...\', false)
#2 /Applications/MAMP/htdocs/homepage.com/wp-includes/general-template.php(168): locate_template(Array, true, false)
#3 /Applications/MAMP/htdocs/homepage.com/wp-content/themes/homepage/index.php(20): get_template_part(\'template-parts/...\', \'archive\')
#4 /Applications/MAMP/htdocs/homepage.com/wp-includes/template-loader.php(106): include(\'/Applications/M...\')
#5 /Applications/MAMP/htdocs/homepage.com/wp-blog-header.php(19): require_once(\'/Applications/M...\')
#6 /Applications/MAMP/htdocs/homepage.com/index.php(17): require(\'/Applications/M...\')
#7 {main}
  thrown in /Applications/MAMP/htdocs/homepage.com/wp-content/themes/homepage/template-parts/content-archive.php on line 27
[28-Jul-2020 06:24:51 UTC] PHP Parse error:  syntax error, unexpected \'}\', expecting \')\' in /Applications/MAMP/htdocs/homepage.com/wp-content/themes/cc/functions.php on line 6
[28-Jul-2020 06:24:51 UTC] PHP Notice:  Trying to access array offset on value of type bool in /Applications/MAMP/htdocs/homepage.com/wp-includes/class-wp-recovery-mode-email-service.php on line 339
[28-Jul-2020 06:24:51 UTC] PHP Notice:  Trying to access array offset on value of type bool in /Applications/MAMP/htdocs/homepage.com/wp-includes/class-wp-recovery-mode-email-service.php on line 340
[28-Jul-2020 06:26:51 UTC] PHP Parse error:  syntax error, unexpected \'}\', expecting \')\' in /Applications/MAMP/htdocs/homepage.com/wp-content/themes/cc/functions.php on line 6
[28-Jul-2020 07:03:18 UTC] PHP Notice:  Undefined variable: version in /Applications/MAMP/htdocs/homepage.com/wp-content/themes/cc/functions.php on line 10
[28-Jul-2020 07:03:19 UTC] PHP Notice:  Undefined variable: version in /Applications/MAMP/htdocs/homepage.com/wp-content/themes/cc/functions.php on line 10

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