Can not save changes in Performance

/wp-admin/admin.php?page=_options&tab=1

can not save if gzip is on

have u got a tip?

Hello,

Could you please disable all plugins that are not related to our theme and provide us your admin access so we can check it?

Thank you in advance

Thanks for quick reply

Thank you for your help.

I had the plugins before, too.
if I turn off the caching plugin, not much changes.

cmb2 redux-framework
wordpress-seo-premium
wp-speed-of-light
contact-form-7
regenerate-thumbnails wp-instagram-widget
wp-speed-of-light-addon
facebook-for-woocommerce
remove-yoast-seo-comments
wpseo-local
yith-woocommerce-wishlist
revslider
wpseo-local-woocommerce
yoast-seo-search-index-purge
js_composer
woocommerce
wpseo-news
mailchimp-for-wp
woocommerce-gateway-paypal-express-checkout
wpseo-video
Nginx-FastCGI-Cache-master
woodmart-core
wpseo-woocommerce

Please, disable these plugins and leave only the plugins required for our theme. And we need your admin access to check this.

DATA IN PRIVATE
Debug on. If you want can give you plesk too!

Notice: A non well formed numeric value encountered in /var/www/vhosts/cosmeticbag.de/httpdocs/wp-content/themes/woodmart/inc/woocommerce.php on line 2909

$percentage = round( ( ( $product->get_regular_price() – $product->get_sale_price() ) / $product->get_regular_price() ) * 100 );

That is buggy too!

FIXED
Warning: DOMDocument::loadHTML(): htmlParseEntityRef: no name in Entity, line: 13 in
/var/www/vhosts/cosmeticbag.de/httpdocs/wp-content/themes/woodmart-child/functions.php
on line
95

   // Get page content
    $html = new DomDocument;
    $html->loadHTML( $content );
    $html->preserveWhiteSpace = false;

His is just a warning, not an error. Your script will still process it.
To suppress the warnings set

CHANGE WITH ` // Get page content
libxml_use_internal_errors(TRUE);
$html = new DomDocument;
$html->loadHTML($content);
$html->preserveWhiteSpace = false;`

Do you mean that you fixed the problem already? Or you still have some problems?

[Author]

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