Various problems after the update.

Hello! The issue is the same as was recently reported in these two topics:

https://www.ads-software.com/support/topic/there-are-scripts-in-the-page-using-different-release-versions/
https://www.ads-software.com/support/topic/there-are-scripts-in-the-page-using-different-release-versions-2/

The issue is that your module scripts are missing the type attribute:

<script async custom-element="amp-ad" src="https://cdn.ampproject.org/v0/amp-ad-0.1.mjs" crossorigin="anonymous"></script>

Instead it needs to rather be:

<script type="module" async custom-element="amp-ad" src="https://cdn.ampproject.org/v0/amp-ad-0.1.mjs" crossorigin="anonymous"></script>

This may be a problem with WP Fastest Cache.

As a quick fix, you can turn off AMP module scripts via this helper plugin: https://gist.github.com/westonruter/279bcb54336449ce55d8887fb0fcf5b9

The better fix, however, is to prevent WP Fastest Cache from (apparently) stripping out the type="module" attribute in the first place.

I asked Fastest Cache support for a resolution. but how come before the latest version of Amp there weren’t these problems?

The latest version (v2.1) of the AMP plugin introduced a new Optimizer performance feature to serve AMP scripts as modules to modern browsers. You can read more about it in the release notes under Serve AMP scripts as ES modules to modern browsers.

Again, you can turn off that functionality with this helper plugin: https://gist.github.com/westonruter/279bcb54336449ce55d8887fb0fcf5b9

I can’t download the recommended plug-in to disable the feature. gives as a problem a critical error when I upload the zip file. I also sent an email to Fastest Cache customer service to see if there is any possibility of intervening on the plug-in: could it happen that many users update Fastest sw and find this problem?

What is the critical error that was reported when you uploaded the ZIP file? Did you have the AMP plugin turned off?

no I just installed GitHub Uptader plugin and from there I tried the installation through the url of the plugin reported. I have not disabled Amp plugins.

This Url:

https://gist.github.com/westonruter/6110fbc4bef0c4b8c021a112012f7e9c/archive/0bb41b1a26784e82928b3b6d9d83c4bc9a999fae.zip

What was the error message?

Si è verificato un errore critico sul tuo sito web. Controlla la casella di posta dell’amministratore del sito per istruzioni

I have not received any messages in my inbox.

I also tried to upload the zip file directly through the classic way, but the result did not change.

Humm, ok. I’m not sure what’s wrong with the uploader. In any case, all you need is this PHP code:

add_filter(
	'amp_optimizer_config',
	function ( $config ) {
		$config['AmpProject\Optimizer\Transformer\RewriteAmpUrls']['esmModulesEnabled'] = false;
		return $config;
	}
);

You can put that anywhere you want. It can be in a custom plugin (preferred) or just added to your custom theme’s functions.php.

Actually, this can’t go in your active theme’s functions.php since you’re using a Reader theme.

So yeah, a custom plugin is the way to go.

i added the snippet in the theme i use for amp pages (twenty fourtree) and now it seems that everything is back to normal. search console is currently having trouble because I changed the suffix from? amp = 1 to \ amp in time everything will return to normal, right? anyway thank you very much.

in fact you are right. which plugin should i edit?