Error Log Full of JP Boost errors
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Hey,
So I was trying to debug a totally unrelated issue but when I went into the error log, it was mostly full of Jetpack Boost errors
H01071: Got error ‘PHP message: PHP Fatal error: Uncaught TypeError: WP_HTML_Tag_Processor::get_updated_html(): Return value must be of type string, null returned in /home/site/public_html/wp-includes/html-api/class-wp-html-tag-processor.php:4146\n
Stack trace:\n
#0 /home/site/public_html/wp-content/plugins/jetpack-boost/jetpack_vendor/automattic/jetpack-image-cdn/src/class-image-cdn.php(699): WP_HTML_Tag_Processor->get_updated_html()\n
#1 /home/site/public_html/wp-includes/class-wp-hook.php(324): Automattic\Jetpack\Image_CDN\Image_CDN::filter_the_content(NULL)\n
#2 /home/site/public_html/wp-includes/plugin.php(205): WP_Hook->apply_filters(NULL, Array)\n
#3 /home/site/public_html/wp-includes/formatting.php(3984): apply_filters(‘the_content’, ‘[menu_anchor][t…’)\n
#4 /home/site/public_html/wp-includes/class-wp-hook.php(324): wp_trim_excerpt(‘[menu_anchor][t…’, Object(WP_Post))\n
#5 /home/site/public_html/wp-includes/plugin.php(205): WP_Hook->apply_filters(”, Array)\n
#6 /home/site/public…’, referer: https://site.not.real
These things can be caused by knock-on effects or errors bouncing off each other. Many of the posts started with
[fj_dfi][menu_anchor][toc]as they’re template-like things that I don’t need on every page.
[fj_dfi]one pulls in the featured image in the right place.[menu_anchor]just inserts a small bit of standard HTML[toc]inserts my own table-of-contents feature.
I’ve shared that just in case that was relevant. But those features aren’t creating other errors by existing there. It’s not just happening on any particular post or page, or type either.If this is my end/fault, then that’s fine, but I’m struggling to see how to fix this so that I can go back to debugging what I was originally doing.
Thanks in advance,
FJ
Info:
- Latest WordPress version: Yes
- Latest JP Version: Yes
- Server: Unix/Linux
- I tried to reproduce this on a local environment, but I cannot activate any of the features on localhost because my “website is not publicly available”.
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I hadn’t even thought about Cloudflare being a potential conflict TBH. I’ll have a look into it after the weekend.
Some of those steps I have in place (like excluding the dashboard from cache) but I don’t use the CF plugin as I didn’t see a benefit before. But I can, as part of testing.
Did the Errors Return?
Sadly, yes. I’ll look at this specific URL now, as it’s a particular post type and I can’t afford (traffic-wise) for that content to break.
But this post_type doesn’t include the shortcodes I looked out from other posts. I’ll see what could possibly causing a
nullin the code now before I break for the weekend.'PHP message: PHP Fatal error: Uncaught TypeError: WP_HTML_Tag_Processor::get_updated_html(): Return value must be of type string, null returned in /home/site/public_html/wp-includes/html-api/class-wp-html-tag-processor.php:4146\nStack trace:\n#0 /home/site/public_html/wp-content/plugins/jetpack-boost/jetpack_vendor/automattic/jetpack-image-cdn/src/class-image-cdn.php(699): WP_HTML_Tag_Processor->get_updated_html()\n#1 /home/site/public_html/wp-includes/class-wp-hook.php(324): Automattic\\Jetpack\\Image_CDN\\Image_CDN::filter_the_content(NULL)\n#2 /home/site/public_html/wp-includes/plugin.php(205): WP_Hook->apply_filters(NULL, Array)\n#3 /home/site/public_html/wp-includes/formatting.php(3984): apply_filters('the_content', 'Because there a...')\n#4 /home/site/public_html/wp-includes/class-wp-hook.php(324): wp_trim_excerpt('Because there a...', Object(WP_Post))\n#5 /home/site/public_html/wp-includes/plugin.php(205): WP_Hook->apply_filters('', Array)\n#6 /home/site/public...', referer: https://fibrojedi.me.uk/ffxiv-enemies/nix/Edit: Looking at the error log, it’s not just posts or post_types. This error is also being tripped on a category page like – https://fibrojedi.me.uk/category/lotro/.
Excerpt?
I was curious – looking at the error – because it seems to be the wp_trim_excerpt() causing and issue. Why, though, I don’t know.
AFAIK, the only interaction my site has directly with the excerpt is this function
function fibrojedi_remove_shortcode_from_excerpt($content) {
//https://wordpress.stackexchange.com/questions/112010/strip-shortcode-from-excerpt
if(!is_null($content)){
$content = str_replace(“[fj_toc]”,””,$content);
$content = str_replace(“[fj_dfi]”,””,$content);
$content = str_replace(“[menu_anchor]”,””,$content);
$content = str_replace(“Post Sections”,””,$content);
$content = str_replace(“Hide”,””,$content);
$content = str_replace(“Show”,””,$content);
$content = strip_shortcodes( $content );
}
return $content;
}
add_filter(‘the_excerpt’, ‘fibrojedi_remove_shortcode_from_excerpt’);I had seen, in categories, that if I hadn’t pre-populated an excerpt (ain’t nobody always got time for that) then the system was inserting one but including printing out shortcodes. Odd for WP to do that at all.
So I did my own function to clear out certain shortcodes and phrases on UI elements that had nothing to do with the intro text.
I don’t know if it’s related, but, as you can see, it should not return
nullprovided that$contentisn’tnullat the start.Thinking about it, maybe I should force it to return a blank string if it’s
nullbut I might be looking in the wrong rabbit hole here.XML-RPC
However, I may have manually added my own off-cloudflare rule around
xmlrpc.phpwhich, without knowing in advance, may have also caused hiccups. I’ve been hit a few times with…outside forces…trying to do their thing on that PHP file in the past, but I’m not totally blocking it either.Edit: Using the plugin WP-Hide, I had, in fact, renamed xmlrpc as I don’t use another plugin that requires “outside in” access. I’ve put it back to the default for now. Their setting did allow for a block on the default file but I didn’t enable that, so in theory it shouldn’t have caused the issue. But there’s theory…then there’s reality!
Occasionally in the log there is a reference like the below. But not all the IPs that triggered the original error could be linked to the below error either. In fact, it was the minority where they were linked (by IP and timestamp).
[access_compat:error] [pid 397775:tid 397775] [client 172.70.55.38:56194] AH01797: client denied by server configuration: …/xmlrpc.php
SSL/HTTPS
Re: HTTPS: everything is SSL, but I don’t mind adding the extra wp-config rule. It won’t make a difference to my SSL-everywhere-and-redirects-in-case-of-HTTP approach – but it won’t harm to add them either.
I’ll run the other tests and things next week (it’s late on Saturday and I have Sundays off blog stuff).
I know Jetpack can’t (and shouldn’t) offer customer support for Cloudflare, but if one of your plugins detects it in use, sending a notification to read the articles you just linked might be an idea?
Additional Check – htaccess
I just spotted in the error log that xmlrpc.php was still blocked. So I checked the
htaccessand I still had a <Files> rule doing just that.I’ve deactivated that (for now).
I won’t disable Cloudflare yet, under the “Change one thing at once else no one knows what caused anything” approach.
Edit: Out of curiosity, if this does seem to fix it, how can I make the rule so JP can do its work while keeping it blocked from everyone else?
<Files xmlrpc.php>
Order deny,allow
Deny from all
Allow from .wp.com
</Files>I took
.wp.comfrom the fact that you’re matching^http(s)?://i[\d]{1}.wp.comin class-image-cdn.php (Line 689)
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