Deprecated function: strtoupper(): Passing null to parameter #1 ($string) of type string is deprecated in Drupal\pricespider\Service\PriceSpiderService->getCountryCode() (line 295 of modules/contrib/pricespider/src/Service/PriceSpiderService.php).

Problem/Motivation

While running the page where the PriceSpider module is configured, it is giving deprecation error for the strtoupper()

<strong>Deprecated function: strtoupper(): Passing null to parameter #1 ($string) of type string is deprecated in Drupal\pricespider\Service\PriceSpiderService->getCountryCode() (line 295 of modules/contrib/pricespider/src/Service/PriceSpiderService.php).</strong>

Steps to reproduce

• Upgrade php version to above 8.1.
• Add PriceSpider module verision 3.0.0-beta2.
• Install and Configure module and visit page.

You will see mentioned error on top of the page.