mod_virtuemart_languages errors PHP 8.1.13

[ViPeS]

The language switching module (mod_virtuemart_languages) with PHP 8.1.13 produces errors

DEPRECATED: TRIM(): PASSING NULL TO PARAMETER #1 ($STRING) OF TYPE STRING IS DEPRECATED IN /HOME/VIINIS/DOMAINS/VIRTUVINIS.LT/PUBLIC_HTML/MODULES/MOD_VIRTUEMART_LANGUAGES/MOD_VIRTUEMART_LANGUAGES.PHP ON LINE 21

DEPRECATED: TRIM(): PASSING NULL TO PARAMETER #1 ($STRING) OF TYPE STRING IS DEPRECATED IN /HOME/VIINIS/DOMAINS/VIRTUVINIS.LT/PUBLIC_HTML/MODULES/MOD_VIRTUEMART_LANGUAGES/MOD_VIRTUEMART_LANGUAGES.PHP ON LINE 22

DEPRECATED: HTMLSPECIALCHARS(): PASSING NULL TO PARAMETER #1 ($STRING) OF TYPE STRING IS DEPRECATED IN /HOME/VIINIS/DOMAINS/VIRTUVINIS.LT/PUBLIC_HTML/MODULES/MOD_VIRTUEMART_LANGUAGES/MOD_VIRTUEMART_LANGUAGES.PHP ON LINE 26