I found the following errors in the exception.log and debug.log files in /var/log folder:
[2019-12-17 16:23:05] main.CRITICAL: The element "product.info.options" can't have a child because "product.info.options" already has a child with alias "default". {"exception":"[object] (Magento\Framework\Exception\LocalizedException(code: 0): The element "product.info.options" can't have a child because "product.info.options" already has a child with alias "default". at /home/xxxxx/public_html/vendor/magento/framework/Data/Structure.php:625)"} []
[2019-12-17 16:23:05] main.CRITICAL: The element "product.info.options" can't have a child because "product.info.options" already has a child with alias "text". {"exception":"[object] (Magento\Framework\Exception\LocalizedException(code: 0): The element "product.info.options" can't have a child because "product.info.options" already has a child with alias "text". at /home/xxxxx/public_html/vendor/magento/framework/Data/Structure.php:625)"} []
[2019-12-17 16:23:05] main.CRITICAL: The element "product.info.options" can't have a child because "product.info.options" already has a child with alias "file". {"exception":"[object] (Magento\Framework\Exception\LocalizedException(code: 0): The element "product.info.options" can't have a child because "product.info.options" already has a child with alias "file". at /home/xxxxx/public_html/vendor/magento/framework/Data/Structure.php:625)"} []
[2019-12-17 16:23:05] main.CRITICAL: The element "product.info.options" can't have a child because "product.info.options" already has a child with alias "select". {"exception":"[object] (Magento\Framework\Exception\LocalizedException(code: 0): The element "product.info.options" can't have a child because "product.info.options" already has a child with alias "select". at /home/xxxxx/public_html/vendor/magento/framework/Data/Structure.php:625)"} []
[2019-12-17 16:23:05] main.CRITICAL: The element "product.info.options" can't have a child because "product.info.options" already has a child with alias "date". {"exception":"[object] (Magento\Framework\Exception\LocalizedException(code: 0): The element "product.info.options" can't have a child because "product.info.options" already has a child with alias "date". at /home/xxxxx/public_html/vendor/magento/framework/Data/Structure.php:625)"} []
Besides, in the catalog_product_view.xml file this is the block product.info.options.
Any idea on how to resolve this issue of the template?
