PHP critical condition – jtl_paypal_commerce, JTL Shop [closed]

I have an online store based on JTL Shop where this error keeps being sent all the time:

“Info: CRITICAL: PHP critical condition found!
Possbile plugin name: jtl_paypal_commerce
2025-10-01 09:20:22.223860 [NOTICE] [986761] [T0] [80.187.122.9:22877-H3:89E3F183CCE72FEF-12#APVH www.domain.de:443] [STDERR] PHP Fatal error: Uncaught TypeError: JTLLanguageLanguageHelper::mappedGetCountryCodeByCountryName(): Argument #1 ($iso) must be of type string, null given, called in /home/bndifoms/domains/domain/public_html/includes/src/Language/LanguageHelper.php on line 180 and defined in /home/bndifoms/domains/domain/public_html/includes/src/Language/LanguageHelper.php:1105”

Has anyone ever had a similar case before? Or perhaps does anyone know a solution / could help?

Thank you in advance.