«SimpleXMLElement::addAttribute(): string is not in UTF-8»

Hello,

I am upgrading magento 2.2.3 to 2.2.4 using composer but after upgrade while running setup:upgrade command I am stuck near Magento_Sales and then it is throwing error
“Warning: SimpleXMLElement::addAttribute(): string is not in UTF-8 in /chroot/home/a7e7c3c6/nodns.bulkherbstore.com/html/vendor/magento/module-shipping/Model/Simplexml/Element.php on line 27”

Please help me to upgrade magento to 2.2.4/2.2.5 version.

Thanks

Why do not you want to check the line you was exactly pointed to?

this line contains below code

parent::addAttribute($name, $value, $namespace);

Wrap the line to a try.. catch block, catch the exception, and check the $name and $value variables for incorrect UTF-8 characters.

Now, I am getting this error on checkout.

Also no shipping method is displayed on there. And if I removed zipcode then shipping method is displaying there but Can move without zipcode.

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