USPS shipping method issue

[sushil_dikshit]

Hello All

I face one issue in USPS shipping method in magento version 2.3.3 after enable these shipping method on checkout page not showing any shipping
on log file show the following error can you please suggest any solution regarfing.

Per our phone conversation the 500 response is logged as php error log entries in the following file:
/home/acb22631/logs/php-error.log

This entry repeats, within:
[07-Dec-2020 20:44:05 UTC] PHP Fatal error: Uncaught TypeError: Argument 1 passed to Magento\Catalog\Model\ProductRepository:repareSku() must be of the type string, null given, called in /chroot/home/acb22631//html/vendor/magento/module-catalog/Model/ProductRepository.php on line 793 and defined in /chroot/home/acb22631//html/vendor/magento/module-catalog/Model/ProductRepository.php:803

Thanks
Kapil Dixit

[Mukesh Tiwari]

Hi @sushil_dikshit 

It seems like the product is missing sku information. Please check in admin to verify.

Check the file vendor/magento/module-catalog/Model/ProductRepository.php

/**
     * Converts SKU to lower case and trims.
     *
     * @param string $sku
     * @return string
     */
    private function prepareSku(string $sku): string
    {
        return mb_strtolower(trim($sku));
    }