Php Woocommerce需要很长时间才能加载并抛出带有503错误的我的页面

我一直在用woocommerce制作wordpress网站，效果很好，但是当你进入woocommerce>Desktop中的wordpress面板时，要查看你的销售、排行榜等，需要很长时间才能加载，网站出现503错误，我3分钟内无法访问该网站。这可能发生在整个woocommerce插件中，但在本节中，这个问题发生得最多。服务器使用所有512 Mb和所有1 Mb的I/O

在Cpanel>Metrics>CPU和并发连接使用率>快照中，该表显示了两个CMD/usr/sbin/httpd-k start，每个都有225 MB的ram

我已经重新安装了woocomerce插件，我增加了php内存和wordpress内存，但不起作用。有人有这个问题吗

谢谢你的支持

编辑1

我在wp内容中的调试日志是：

[12-Jun-2020 22:49:54 UTC] PHP Notice:  Undefined index: items in /home/vmgcwv3crvl0/public_html/(mydomain)/wp-includes/rest-api.php on line 1251
[12-Jun-2020 22:49:54 UTC] PHP Notice:  Trying to access array offset on value of type null in /home/vmgcwv3crvl0/public_html/(mydomain)/wp-includes/rest-api.php on line 1226
[12-Jun-2020 22:49:54 UTC] PHP Notice:  Trying to access array offset on value of type null in /home/vmgcwv3crvl0/public_html/(mydomain)/wp-includes/rest-api.php on line 1240
[12-Jun-2020 22:49:54 UTC] PHP Notice:  Trying to access array offset on value of type null in /home/vmgcwv3crvl0/public_html/(mydomain)/wp-includes/rest-api.php on line 1258
[12-Jun-2020 22:49:54 UTC] PHP Notice:  Trying to access array offset on value of type null in /home/vmgcwv3crvl0/public_html/(mydomain)/wp-includes/rest-api.php on line 1298
[12-Jun-2020 22:49:54 UTC] PHP Notice:  Trying to access array offset on value of type null in /home/vmgcwv3crvl0/public_html/(mydomain)/wp-includes/rest-api.php on line 1314
[12-Jun-2020 22:49:54 UTC] PHP Notice:  Trying to access array offset on value of type null in /home/vmgcwv3crvl0/public_html/(mydomain)/wp-includes/rest-api.php on line 1319
[12-Jun-2020 22:49:54 UTC] PHP Notice:  Trying to access array offset on value of type null in /home/vmgcwv3crvl0/public_html/(mydomain)/wp-includes/rest-api.php on line 1324
[12-Jun-2020 22:49:54 UTC] PHP Notice:  Trying to access array offset on value of type null in /home/vmgcwv3crvl0/public_html/(mydomain)/wp-includes/rest-api.php on line 1329
[12-Jun-2020 22:49:54 UTC] PHP Notice:  Trying to access array offset on value of type null in /home/vmgcwv3crvl0/public_html/(mydomain)/wp-includes/rest-api.php on line 1356
[12-Jun-2020 22:49:54 UTC] PHP Notice:  Undefined index: items in /home/vmgcwv3crvl0/public_html/(mydomain)/wp-includes/rest-api.php on line 1251
[12-Jun-2020 22:49:54 UTC] PHP Notice:  Trying to access array offset on value of type null in /home/vmgcwv3crvl0/public_html/(mydomain)/wp-includes/rest-api.php on line 1226
[12-Jun-2020 22:49:54 UTC] PHP Notice:  Trying to access array offset on value of type null in /home/vmgcwv3crvl0/public_html/(mydomain)/wp-includes/rest-api.php on line 1240
[12-Jun-2020 22:49:54 UTC] PHP Notice:  Trying to access array offset on value of type null in /home/vmgcwv3crvl0/public_html/(mydomain)/wp-includes/rest-api.php on line 1258
[12-Jun-2020 22:49:54 UTC] PHP Notice:  Trying to access array offset on value of type null in /home/vmgcwv3crvl0/public_html/(mydomain)/wp-includes/rest-api.php on line 1298
[12-Jun-2020 22:49:54 UTC] PHP Notice:  Trying to access array offset on value of type null in /home/vmgcwv3crvl0/public_html/(mydomain)/wp-includes/rest-api.php on line 1314
[12-Jun-2020 22:49:54 UTC] PHP Notice:  Trying to access array offset on value of type null in /home/vmgcwv3crvl0/public_html/(mydomain)m/wp-includes/rest-api.php on line 1319
[12-Jun-2020 22:49:54 UTC] PHP Notice:  Trying to access array offset on value of type null in /home/vmgcwv3crvl0/public_html/(mydomain)/wp-includes/rest-api.php on line 1324
[12-Jun-2020 22:49:54 UTC] PHP Notice:  Trying to access array offset on value of type null in /home/vmgcwv3crvl0/public_html/(mydomain)/wp-includes/rest-api.php on line 1329
[12-Jun-2020 22:49:54 UTC] PHP Notice:  Trying to access array offset on value of type null in /home/vmgcwv3crvl0/public_html/(mydomain)/wp-includes/rest-api.php on line 1356

编辑2

PHP版本：7.4.5

Woocommerce版本：4.2.0

Wordpress版本：5.4.2

rest api代码：

我看到了这一点，现在我在调试日志中没有错误，但当进入查看woocommerce静态时，我的网站熄灭了，但现在有524个错误

在google控制台中，我加载静态数据时出现以下错误：

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尝试更改主题，使其成为默认主题，然后查看工作和添加定义（'WP_DEBUG'，true）；并定义（'WP_DEBUG_LOG'，true）；到“wp config.php”文件。这将在wp内容文件夹中创建一个“debug.log”文件。我希望这可以帮助您尝试更改主题，使其成为默认主题，并查看工作和添加定义（'WP_DEBUG'，true）；并定义（'WP_DEBUG_LOG'，true）；到“wp config.php”文件。这将在wp内容文件夹中创建一个“debug.log”文件。我希望这能对您有所帮助

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