Minicart not updating

section-config.phtml

When you have multiple path domain like domain.com/storename/, domain.com/storenamexxx/, ...
The mangento misunderstand what is the REQUESTs PATH that it needs update mini cart content.

A quick fix for it we should remove the ending trailing slash from URL UPDATE MAPPING as below:

Create a new rewrite file: app/design/frontend/VENDOR/THEME/Magento_Customer/templates/js/section-config.phtml 


<?php
/**
 * Copyright © Magento, Inc. All rights reserved.
 * See COPYING.txt for license details.
 */

/** @var \Magento\Customer\Block\SectionConfig $block */
?>
<script type="text/x-magento-init">
    {
        "*": {
            "Magento_Customer/js/section-config": {
                "sections": <?= /* @noEscape */ $this->helper(\Magento\Framework\Json\Helper\Data::class)->jsonEncode($block->getSections()) ?>,
                "clientSideSections": <?= /* @noEscape */ $this->helper(\Magento\Framework\Json\Helper\Data::class)->jsonEncode($block->getClientSideSections()) ?>,
                "baseUrls": <?= /* @noEscape */ $this->helper(\Magento\Framework\Json\Helper\Data::class)->jsonEncode(array_unique([
                    rtrim($block->getUrl(null, ['_secure' => true]), '/') . '/', // FIX to guarantee end trailing slash on baseUrls
                    rtrim($block->getUrl(null, ['_secure' => false]), '/') . '/', // FIX to guarantee end trailing slash on baseUrls
                ])) ?>,
                "sectionNames": <?= /* @noEscape */ $this->helper(\Magento\Framework\Json\Helper\Data::class)
                    ->jsonEncode($block->getData('sectionNamesProvider')->getSectionNames()) ?>
            }
        }
    }
</script>