Before module installation VAT4EU_MIN_LENGTH is not defined yet, but is already called in admin/includes/languages/english/extra_definitions/vat4eu_extra_definitions_admin.php
Result: blank page when entering admin with
Uncaught Error: Undefined constant "VAT4EU_MIN_LENGTH" in /xxx/admin/includes/languages/english/extra_definitions/vat4eu_extra_definitions_admin.php:28
Suggestion
add to vat4eu_extra_definitions_admin.php:
if (!defined('VAT4EU_MIN_LENGTH')) define('VAT4EU_MIN_LENGTH', '');
Zen Cart 1.5.7d
PHP 8.0.16
Before module installation VAT4EU_MIN_LENGTH is not defined yet, but is already called in admin/includes/languages/english/extra_definitions/vat4eu_extra_definitions_admin.php
Result: blank page when entering admin with
Uncaught
Error: Undefined constant "VAT4EU_MIN_LENGTH" in/xxx/admin/includes/languages/english/extra_definitions/vat4eu_extra_definitions_admin.php:28
Suggestion
add to vat4eu_extra_definitions_admin.php:
if (!defined('VAT4EU_MIN_LENGTH')) define('VAT4EU_MIN_LENGTH', '');