preg_split(): Passing null to parameter #2 ($subject) of type string is deprecated

Problem/Motivation

Receiving this message on a PHP 8.1 server:

Deprecated function: preg_split(): Passing null to parameter #2 ($subject) of type string is deprecated in Drupal\easy_breadcrumb\EasyBreadcrumbBuilder->build() (line 254 of modules/contrib/easy_breadcrumb/src/EasyBreadcrumbBuilder.php)

Steps to reproduce

Upgrade your PHP version to 8.1

Proposed resolution

Edit in /src/EasyBreadcrumbBuilder.php row 254:

from:
$mapValues = preg_split('/[\r\n]+/', $this->config->get(EasyBreadcrumbConstants::REPLACED_TITLES));

to:
$mapValues = !empty($this->config->get(EasyBreadcrumbConstants::REPLACED_TITLES)) ? preg_split('/[\r\n]+/', $this->config->get(EasyBreadcrumbConstants::REPLACED_TITLES)) : [];